Google "David Hey" and Hearth Tax. You will see many reviews of his work and several projects jointly with George Redmonds. Better still if you are anywhere near West Yorkshire then come to the Annual Lecture Day with our Administrator, Janice Wood and others from Yorksgen. Saturday 21st July 2012. _http://yourfairladies.ning.com/events/annual-lecture-day_ (http://yourfairladies.ning.com/events/annual-lecture-day) He gave a similar talk at the Guild of One Name Studies Conference earlier in the year which was excellent. Jackie