Hello, just catching up with rootschat after a longish absence and came across your queriy, interested since my ancestors came from the Seavingtons, Dowlish, Whitelackington, Lopen, Merriott etc.
<So the names fit but not sure why they would move to Seavington then seemingly back to Merriott ?>
Seavington and Merriott are only about 3 miles apart - no distance to travel/walk in the early 1800's. Highly likely that William moved to Seavington to marry Grace - perhaps he helped on or took over Grace's father's farm or business? Then, perhaps he wished to be buried in Merriott in a family grave?
Are there any wills for Grace's family that you can access to see if he, or his children, receive a
bequest? Might give some clues.