William Child born 30.12.1788 of Wm & Catherine bapt 22.3.1789 New Jerusalem (perhaps William Child bach = 3.5.1779 Shoreditch to Catherine Green sp her mark wits Thos Boycott, Wm Brewer) / William Child of Joseph & Elizabeth bapt 19.6.1791 there (perhaps the William Child born 30.10.1751 bapt 10.11.1751 St James Piccy of Joseph & Elizabeth who was likely the Wm C pork butcher 6 Tyler St SunFire 1791 but probably not the William Child victualler of Mayfair will PCC 1813). See my entry for Attwell, William
John Child was in the list of 18 names that added their signatures at the 1789 conference to the 77 names printed in the 5.12.1788 manifesto, William Child was one of the 77. The William Child baptised in 1791 could have been the father of the infant baptised in 1788 but that seems a strange way round to do things. He could have been of a separate family or a cousin, and either an infant or an adult