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Durham University

Institute of Medieval and Early Modern Studies (IMEMS)

Staff and Governance

Core Staff

The day-to-day running of IMEMS is the responsibility of the Core Executive Committee, comprising the Director and Associate Directors and the Administrator. 

Publication details for Dr Andrew R Millard

Millard, A (2002). Bayesian approach to sapwood estimates and felling dates in dendrochronology. Archaeometry 44(1): 137-143.

Author(s) from Durham


An improved method of generating sapwood estimates for oak is developed. This suggests a revision of the 95% confidence range from 10–40 to 9–36 rings for trees from southern England. Current methods for estimating felling dates on timbers with incomplete sapwood do not generate true 95% confidence limits, and a Bayesian method for deriving such limits is presented. For timbers with no sapwood, the addition of 12 years to the date of the final ring is shown to give a 95% confidence limit on the terminus post quem for felling. The further application of these methods is illustrated by calculation of the common felling date for timbers from the Great Kitchen at Windsor Castle.

Full Executive Committee

Our Full Executive Committee is made up of the Core Executive Committee, listed above, plus a number of executive members including:

International Advisory Board

We are extremely fortunate to have be able to call on the help and guidance of colleagues from around the world who help to shape and guide our direction, strategy and international reach. Our current Advisory Board members are: