There are two Arend de Waal's on the same page of the baptismal record of 1756. This on was baptised on 11 April 1756, the other on 9 May 1756. Different parents. Relationship and identity confirmed by notation on twin daughters' baptism where he is listed as wyle (deceased) (died on 29 Jul 1809, daughters born 15 Sept 1809 and baptised on 29 Oct 1809.