William Mauduit I

✓ William Mauduit I, Chamberlain of the Treasury under Henry I, father of Robert (chamberlain, drowned in the White Ship 1120) and of William (chamberlain 1135). Earlier origin not wired. Source: VCH Buckinghamshire vol. 4 (1927), 'Hanslope with Castle Thorpe', Castle and Honour (british-history.ac.uk), citing the records in its notes 52-57. [DIRECT ANCESTOR OF THE COMPILER: flag added 25 Oct 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]