Baron Belasyse was a title that was created twice in the Peerage of England.
He was the second son of Thomas Belasyse, 1st Viscount Fauconberg, the younger brother of the Honourable Henry Belasyse and the uncle of Thomas Belasyse, 1st Earl Fauconberg (see Viscount Fauconberg for earlier history of the family).
The title became extinct when the second Baron died childless in 1691.
This was a rare life peerage and became extinct on her death without surviving issue in 1713.
Lady Belasyse was the daughter of Sir William Armine, 2nd Baronet (see Armine baronets), and his wife Anne Crane.