Sir John CLOTWORTHY Visc. Massereene

  General Notes:

https://en.wikipedia.org/wiki/John_Clotworthy,_1st_Viscount_Massereene
Massereene married Margaret Jones, daughter of Roger Jones, 1st Viscount Ranelagh: they had two daughter, Mary and Lettice. He died without male issue, and the title devolved on Mary's husband Skeffington, whose great-grandson, the fifth viscount, was created Earl of Massereene in 1756. The earldom became extinct on the death of the fourth earl without male issue in 1816, the viscounty and barony of Lough Neagh descending to his daughter Harriet, whose husband, Thomas Foster, took the name of Skeffington, and inherited from his mother in 1824 the titles of Viscount Ferrard and Baron Oriel of Collon in the Irish peerage, and from his father in 1828 that of Baron Oriel of Ferrard in the peerage of the United Kingdom.

John married Margaret JONES, daughter of Sir Roger JONES 1st Visc. Ranelagh and Frances MOORE, in 1642-1643.¹ (Margaret JONES was born in 1599 in ² and died on 7 Jan 1669 ².)