Background
He was the son of Sir Roger Mostyn, 3rd Baronet and Lady Essex Finch, the daughter of Daniel Finch, 2nd Earl of Nottingham.
He was the son of Sir Roger Mostyn, 3rd Baronet and Lady Essex Finch, the daughter of Daniel Finch, 2nd Earl of Nottingham.
Christ"s College; Westminster School.
He was educated at Westminster School and Christ"s College, Cambridge and graduated Bachelor in 1743, and Master of Arts in 1745. He was appointed:
Rector of Eastling, Kent 1746 - 1752
Rector of Christleton, Cheshire 1752 - 1774
Prebendary of Chester 1760 - 1775
He was appointed to the twelfth stall in Street George"s Chapel, Windsor Castle in 1774, and held the stall until 1775.