After the Anglo-Norman invasion some time before 1173, Leinster was inherited by Strongbow
Richard Fitz Gilbert de Clare "Strongbow", 2nd Earl of Pembroke, through his marriage to
Aoife of Leinster, daughter of
Diarmait MacMurrough, one of the
Kings of Leinster. The name Castlewarden appears to be derived from Warinus, Abbott of St Thomas’ Abbey in 1268 - Castellum Warin (Latin).
Adam de Hereford had bestowed the lands on the Abbey of St Thomas, along with Wochtred (
Oughter Ard) after being given large territories of land by Strongow. In 1377 John Leche, nephew of Ewa de L’Leche, wife of Hugh de Warin, and physician to Edward III, was grantee by patent of Castle Warin and other lands in Kildare. He was a son of John Leche of Ghattisworth, esq. and Lucy de L’Leche. The church was vacated by the early 17th century. The castle remained in good repair until the 18th century. ==Landmarks==