Sir Leoline Jenkins was a Welsh academic, diplomat involved in the negotiation of international treaties, jurist and politician. He was a clerical lawyer who served as Judge of the High Court of Admiralty from 1668 to 1685, and enjoyed a high reputation for judicial integrity. As a statesman he served as Secretary of State from 1680 to 1684.

Llantrisant is a town in the county borough of Rhondda Cynon Taf, within the historic county boundaries of Glamorgan, Wales, lying on the River Ely and the Afon Clun. The three saints of the town's name are SS. Illtyd, Gwynno, and Dyfodwg. Llantrisant is a hilltop settlement, at an altitude of 174 m (571 ft) above sea level. The town is home to the Royal Mint.