Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Village in Devon, England
Marystow or Stow-St. Mary was a village and parish in the Tavistock district of Devon, England.
St Mary's church is medieval. The chancel was built in the early 14th century. The west tower and the north aisle are Perpendicular. In 1824 the tower was partly rebuilt. The font is Norman. There is an ambitious monument to Sir Thomas Wyse who died in 1629.
Footnotes
Pevsner, N. (1952) South Devon. Harmondsworth:Penguin; p. 204