In the first three editions of ‘ANSTEY: Our True Surname Origin and Shared Medieval Ancestry‘ on pages 93-4 we said that Richard de Anstey had three children, the third being William “who died childless”. This information came from the pedigree in ‘New Light on the Anstey Case’ by P. A. Brand, which we are now very confident is incorrect. The author almost certainly concluded that Richard had a son William because
a) he incorrectly concluded that John (I) had no issue (which he clearly did because almost all Ansteys alive today descend directly from him); and
b) because he knew a ‘William de Anstey’ existed at around this time because of Ancient Deed A7358, dated probably c1180, which was witnessed (or endorsed) by both “Willelmo de Anestie” and “Johanne de Anestie”.
Hence the author presumably concluded that William must have been a childless son of Richard; in fact William was a son of John (I). This new information will appear in the fourth edition of ‘ANSTEY: Our True Surname Origin and Shared Medieval Ancestry‘, research for which is currently well under way.
Of course if anybody has any evidence to the contrary we would love to hear from you at firstname.lastname@example.org