Family talk:John de Saint John and Maud Gray (1)

Mapperton, Dorset and Maperton, Somerset [10 December 2021]

"Maperton House was built in the 19th century, but incorporates some 18th-century fragments from a previous manor house which stood on the same site.[6] (Not to be confused with Mapperton House, seat of the Earls of Sandwich, near Beaminster in Dorset.)" from Wikipedia article on Maperton, Somerset.

Since Maud was born and died in Mapperton, it is more likely that the marriage was in Dorset than the smaller (and possibly later) manor house in Somerset. There are places named Cadbury in both Devon and Somerset. I am not in a position to check your sources. --Goldenoldie 10:43, 10 December 2021 (UTC)