was conducted on the skulls from St Helen-on-the-Walls, York, which
tried to assign classifications to populations as diverse as the Yorkshire
Bronze Age and Norse Medieval (Dawes and Magilton 1980:80–1).
These population results are very controversial and such studies are rarely
carried out, although they have not been completely abandoned (pers.
comm. D.Brothwell). Criticisms have included a lack of understanding
about the environmental and genetic influences upon the skull shape
(Stroud and Kemp 1993:175), and the fact that invasions included only a
small number of people in comparison with the total population. In
certain exceptional cases ethnic distinction does seem possible: in the
Roman cemetery of Trentholme Drive, York, one skull had exceptional
characteristics and it has been assumed to be negroid. A further skull was
interpreted at first as negroid in the late Anglo-Saxon cemetery at the
north-east Bailey, Norwich (Stirland 1985:53, 57), but was later
reclassified as from the local Anglo-Saxon population.
Genetic influences may highlight sub-groups within a cemetery,
especially family connections. At St Nicholas Church, Thanington,
Kent, two bodies were found in one coffin (the second one having been
moved into the coffin after partially decomposing) and both skulls
displayed metopism, where the suture persisted in the frontal bone,
which normally disappears within the first two years after birth. This
condition has an incidence of only 9–11 per cent in British material and
is considered a hereditary character (Bennett and Anderson 1991:311).
Genetic features are most noticeable on the skull, such as wormian bones
which are extra, sutural, bones. At the Austin friars at Leicester the
presence of wormian bones in six burials led to speculation that the
bodies ‘could indicate a related population drawing on a restricted gene
pool’ (Mellor and Pearce 1981:168). However, there is some debate
about how much environmental, rather than genetic, influence there is
upon bones, and it is by no means certain that the wormian bones or
metopic suture are a genetic feature. The environmental argument seems
to be in evidence at Rivenhall where the majority of skulls had wormian
bones and it was argued that the sutural anomalies ‘might be linked to
low life expectancy and poor nutrition’ (O’Connor 1993:101).
There is one technique that is rapidly developing which might be the
most useful in genetic studies of skeletons: DNA analysis. As yet, DNA
analysis of archaeological material is in its early stages, but DNA may be
extracted from bones up to 1,000 years old. At Hulton Abbey, samples
from the femurs and ribs were taken from eight skeletons, which
indicated that three were related. The key determinant is only passed
through the female line, so the relatives could not be three generations of
DEATH AND BURIAL IN MEDIEVAL ENGLAND 125