SEDGEFORD HISTORICAL  AND ARCHAEOLOGICAL RESEARCH PROJECT

HUMAN REMAINS

For the previous 9 seasons at SHARP the excavation of the Anglo-Saxon cemetery (c.750 - c.950 AD) on Boneyard has been the major focus of our excavations.   As we enter our tenth year it is a fitting time for us to reflect upon what has been achieved in previous years and to plan how our work will progress in the coming seasons. What follows below is not intended to be a comprehensive survey of what we have done but is designed to answer the most frequently asked questions based upon our findings to date. 

One of the most frequently asked questions is, ‘how many skeletons have you excavated?’  As the table below shows this currently stands at 238.  

 

YEAR

NUMBER OF BURIALS EXCAVATED

1996

16

1997

37

1998

30

1999

33

2000

26

2001

9

2002

32

2003

27

2004

28

TOTAL:

238

 

This is, however, a little misleading.  The table above is based upon how many ‘skeleton numbers’ the Human Remains Team have decided to give out during a particular summer season.  We do not automatically give all human bone that we find a ‘skeleton number’.  The decision to give a skeleton number to human bone is based on the level of skeletal articulation that is present.  By articulation we mean, that the bones are laid in the correct anatomical positions in the ground– e.g. that the femur (thigh bone), for instance, should lie closely at one end to the pelvis (hip bone) and at the other to the tibia and fibula (lower leg).  It may seem that the decision as to whether a collection of bones are articulated or not should be very easy but this is not always the case.  Sedgeford’s Boneyard is a sloped site which has seen numerous instances of disturbance including hill wash, flooding, moles, the inter-cutting of graves and the disturbance of the site by later human intervention including ploughing and ditch digging.  
 

Trying to decipher where one burial ends and another begins is not always an easy task.  It is also necessary to point out that any group of articulated bones can be given a skeleton number and we do not just assign such numbers to whole skeletons; it is, for instance, not unusual for just a upper or lower half of a skeleton to be given a skeleton number.  The picture below show examples of two burials both of which were given skeleton numbers although one is far more complete than the other.


Truncated and complete skeletons (S0013 and S0014)

 

The total skeleton figure of 238 should therefore not be taken to imply that we have 238 complete skeletons although it does give us a minimum of 238 known burials.  These burials are orientated east west and we rarely find anything within the graves although we do find the occasional shroud pin and coffin hinge (why a coffin should need a hinge is an ongoing matter of debate).

 

An obvious question following the above is ‘where are all the other parts of these skeletons?’  Excavations on Boneyard uncover a lot of human bone and a large quantity of this is not articulated and cannot, therefore, be given a skeleton number.  All of this bone is known as ‘disartic’, short for disarticulated, and it is simply assigned the same number that is given, by the archaeologists, to whatever context (e.g. a ditch or a pit) that it is found in.  For most of the disartic it is impossible for us to even try and re-associate it with any of the known, but incomplete, articulated skeletons and it would be irresponsible of us to attempt any simplistic ‘best-fit’ reassigning of disartic bones to articulated skeletons.  We do not, however, simply just disregard such bones and we have an ongoing programme of disartic cataloguing which takes place at Easter and which, dependent upon relevant experience, you are keenly invited to attend. The aim of this cataloguing is for us to eventually reach a much clearer idea of exactly how many individuals were buried in the areas under excavation.  If we solely took the figure of 238 as the number of people buried it is likely that we are severely underestimating the amount of people who were originally buried here.  

Not all disartic bone is, however, treated in this way and we have, in recent years, adopted a different way of treating disartic bone that is found within grave fill soil (i.e. the soil placed around a body).  This different treatment applies where we have 2 or more inter-cutting burials – in other words where we have a later (higher) burial that has been cut into an earlier (lower) burial.  It is not unusual at Sedgeford for burials to have been placed on top of each other – In the now fully excavated Reeddam area there were instances of burials being five deep and two to three deep is certainly not unusual.  It is the norm in these cases that the later burial will have disturbed some of the bones of the earlier one in some way – sometimes the earlier skeleton is completely removed and placed around the skeleton but more frequently only some of the bones will have been disrupted.  In these cases we do use a process of logic to try and ascertain whether any of the disartic bone can be said, with confidence, to belong to the earlier skeleton.  In the summer of 2004 we had the opportunity to excavate and process a refreshingly clear and well-preserved example of one burial disturbing another where we were able to reunite some of the bones to their original owner.

 

As you can see from this picture the skeleton below (and inset right) S0172 is complete but when it was buried the grave diggers cut through an earlier burial and it is the articulated portion of this other individual S0173, mainly its left-hand side, that can be seen lying to the left of S0172.  Around skeleton S0172 we uncovered quantities of disartic bone much of which, through a process of siding and measuring could be confidently reunited with skeleton S0173.

 

 

The right side of S0172 overcuts S0173

Skeletons S0172 (top) and S0173 (bottom)

Some other frequently asked questions include how many males compared to females there are, how long the Anglo-Saxon inhabitants of Sedgeford lived and whether we recover the skeletons of many children.  Sexing a skeleton involves looking for specific characteristics on the skeleton that are located on the skull and pelvis.  We cannot, therefore sex skeletons that do not have these bones and if they only have either a skull or a pelvis we are usually only able to sex them with caution (and they will be recorded as either ?M or ?F which means ‘probable male’ and ‘probable female’).  Poor preservation of bones can also make it difficult for us to carry out sexing.  It is also not possible, using such techniques, to sex children as they will not have had a fully developed skeleton at their time of death and would have had none of the traits used for sexing which usually start to appear during puberty; the skeletons of children on most archaeological sites are therefore left unsexed and this is the case at Sedgeford.  Bearing these difficulties in mind we are obviously not able to sex all of the skeletons but the table below illustrates our current findings.

 

Sex

Adult but Unknown

Male

?Male

Child & therefore indistinct

?Female

Female

Number of Skeletons

24

54

23

46

18

63

 

The mathematicians amongst you may realise that this amounts to 228 not 238 skeletons this is because at the time of creating this information some of the skeletons excavated in the season of 2004 are awaiting recording.  As the figures above show we do not have a clear bias either towards males or females but we do have quite a dearth of children.  Assuming that it is not simply the unlikely case that hardly any children died there are a number of reasons for this.  It could be due to poor bone survival as juvenile bones are more susceptible to deterioration in the ground, it could be because the children were buried elsewhere – although the fact that we currently have at least one child in all the age groupings from newborn to puberty would seem to contradict this, or it could be due to excavators not recognising the bones of the particularly young although SHARP does make a keen effort to debrief all of those working on human remains about what to look for.  Certainly one factor for the lack of children is the above-mentioned inter-cutting of graves.  Where we do find the intact graves of children they quite frequently lay between or very close to graves of larger adult burials and would have been very vulnerable to disturbance when another person was buried on top.  In support of this theory is the fact that it is quite common for us to find one or two pieces of disarticulated bone that are from immature individuals in the soil packed around later adult burials.

Given the problems we have in recovering skeletons of the young it is not possible for us to say anything about the incidence of death during childhood in middle Anglo-Saxon Sedgeford but we can say something about the longevity of the adults.  One feature we use for ageing the adults is their teeth.  Teeth are useful for ageing within a population due to the wear patterns on them. Anglo-Saxons used stones for grinding their grain, which meant that small particles of grit became included in their food and as they ate it eroded the enamel of their teeth with some regularity and is therefore – despite wider criticism - a good indicator of relative ageing, when taken alongside other methods, within our population.  When we analyse the skeletons a large proportion of them fall into the 35-45 years category but it is certainly not unusual for us to place our adults in the 45-55 years category.  It is difficult to precisely age skeletons beyond this because the skeletal markers become unreliable and many of the individuals have lost most of their teeth and in some cases have none left. In the case of one lady with no teeth at all, we simply had to assign her to the category of ‘old age’ as it was impossible to be more precise.

Another question that is frequently asked is ‘what did they die of?’  In the vast majority of cases the answer is simply that we do not know.  Most causes of death do not leave any markings on the skeleton and solely affect the soft tissue about which we can know nothing.  A few of the skeletons at Sedgeford can, however, tell us exactly how some of the Anglo-Saxon inhabitants met their end.

 

This reconstruction drawing is based on sword cut wounds that were found on the skull of skeleton S1018. This is one of around 12 skeleton’s that had clear evidence of weapon injury (see undergraduate dissertation by Ben Stillwell) which in the majority of cases was certainly the cause of their death. 

For further examples of the: reconstruction artwork of Dominic Andrews please follow this link.

 

Following on from questions about causes of death are usually enquiries into the general health of this population.  We have no cases of vitamin D deficiency (Rickets) that would cause the limb bones to appear bowed and there are only a few cases of possible iron deficiency (anaemia) which causes specific areas of the skull to become porous although it is just as likely that anaemia could be induced by illness or trauma as it is by eating an inadequate diet.  On the whole the general robustness of the skeletons at Sedgeford and the low incidence of observable nutrient deficiencies has led us to conclude that the inhabitants of Sedgeford were both well-fed and active individuals – something that supports the wider theory that this cemetery served the needs of a farming community.  Lorna Corr, a research student at the University of Bristol has carried out a study into the quantities of fish and meat consumed by this population and her findings seem particularly intriguing in light of the proximity of Sedgeford to the sea. 

Aside from the occasional broken bone the main health concerns of the Sedgeford people seems to have been the age old problems of toothache and aching joints.  The cause of their tooth problems has already been noted above and in extreme cases of tooth erosion certain individuals developed serious abscess problems some of which may have contributed to their deaths.  

We mainly find evidence for aching joints, or more correctly osteo-arthritis, where we see that extra bone has grown on the joint surfaces of bones – in other words on the area where one bone meets, or rather articulates with, another.  At Sedgeford we have many examples of this and it ranges in severity from slight to excessive.  In excessive cases it can be so severe that it would have disabled movement in the joint.  One skeleton, S0091, excavated in 2003 displays an excessive amount of extra bone growth, which is particularly notable on the heads of both femurs (thigh bones).

We hope that the above has answered some of your questions and that for some of you it may inspire you to come and visit SHARP.  Each summer we run week-long courses on a Basic Introduction to Human Remains. If you have already taken this course or you have previous experience of working with human remains then we would encourage you to put your skills to good use by volunteering to help us with the processing and recording of newly excavated skeletons.  If you fancy tackling a bigger challenge you might like to opt to carry out a piece of research on the skeletal collection.  If you have a research idea or would like us to help you in deciding upon one that is viable (perhaps even to fulfil part of a university course) then we would encourage you to contact us. Some of the research projects that have been carried out in former years are listed below and include studies that range from 3-day projects to PhD level study.

If you are interested in joining us either at Easter for disartic recording or during the summer as a volunteer or on our course, please see the prospectus pages.

Charlotte Burrill, January 2005

 

Dissertations and Projects based on SHARP's Human Remains

M. v. Twest: Study of Identity of an Anglo-Saxon Population
L. Corr: Investigation of Palaeodiet
G. A. Aguado: Dental Abscesses
C. Burrill: Burial Practices
S. Horn: Evidence of Child-Bearing
S. Scudder: Reliability of Ageing Methods
R. Baldry & E. Richardson: The Leg Injury of S1043
A. Powsanda: Anglo-Saxon Child Burial
W. Wilcox & R. Baldry: Burial Orientation
B. Stillman: Cranial Trauma
H. Snelling: Creation of a Human Remains Database
L. Ferrante di Ruffano: Osteoarthritis
J. Colmer: Distribution of Non-Metric Traits
H. Snelling: Pathology in Anglo-Saxon Populations
T. Baxter: Grave fill finds
M. Fashing: Dental Caries
K. Hughes:  Tibial Grooves
C. Misfud: Cribra Orbitalia
W. Wilcox & H. Holman: Hypoplasia
G. Moshenska & E. Richardson: Constructing a Mandibulometer
M. Wilson: Tooth Loss & Age
L. Peck et al: Right & Left Handedness
A. Thompson: Racial Variation by Foot Bones
P. Reid: Methodology for Analysing Disarticulated Bones
S. Becket: Metrical Studies of Disarticulated Remains