Meg
William's first wife, Mary, may be Mary PITT who married a William KERRIDGE at Ipswich St Peter on 31 Jul 1743 (a date which then suits your comment re no children in settlement of 1744).
Interested in your comment re Henry G's aunt being Sarah KERRIDGE who married Henry GALLANT - how do you know she was his aunt?
Note that there was a William Kerridge MULLINGER bp at Barking Sty Mary 28 Jul 1754, son of Rebecca MULLINGER
Got a bit more to look at but thought would get these bits off
Andy