Great uncertainties were raised about whether his parents had two marriage ceremonies, or whether his mother was as with other children she conceived with his father a different/same but unmarried lady. On 16 May 1796 the Earl of Berkeley had married Mary Cole at
Lambeth. The Earl then maintained they had married at
Berkeley, Gloucestershire, officiated by the Vicar of Berkeley, on 30 March 1785. This ceremony was, however, kept secret until after the Lambeth marriage, with Mary being known as Miss Tudor between the two dates. Shortly after the Lambeth marriage a certificate of the Berkeley ceremony was produced, having been recovered, it was alleged, under very strange circumstances. The couple had had six sons up to the marriage of 1796, including William Berkeley. In 1799, after the Earl announced his earlier marriage/ceremony, William Berkeley (commonly styled Viscount Dursley, the normal
courtesy title for the heir apparent to the earldom) obtained leave (permission) to prove his legitimacy before the
Committee for Privileges of the
House of Lords, and in 1801 the Earl made a deposition giving full details of the Berkeley marriage. ==Claim to barony and earldom of Berkeley==