Roscommon Castle was built by Robert de Ufford, Lord Justice of Ireland, in 1269.

de Ufford family

A certain holder of land in Suffolk, named John de Peyton, had a younger son Robert, who acquired the lordship of Ufford in that county and was known as Robert de Ufford. He held an important place in the government of Ireland under Edward I. and died in 1298; his son Robert was created Baron Ufford by a writ of parliament in 1309, and increased his possessions by marriage with Cicely, daughter and heiress of Robert de Valoines. This Robert had several sons, one of whom was Sir Ralph de Ufford, justiciar of Ireland, who married Maud, widow of William de Burgh, earl of Ulster, and daughter of Henry Plantagenet, earl of Lancaster. Robert's eldest surviving son, another Robert, was an associate of the young king Edward III., and was one of the nobles who arrested Roger Mortimer in 1330. In 1337 he was created earl of Suffolk. The earl was employed by Edward III. on high military and diplomatic duties and was present at the battles of Crecy and Poitiers. His son William, the 2nd earl (c. 1339–1382), held important appointments under Edward III. and Richard II. ... more

• A1. Walter, lord of Sibton;
  • B1. Reginald de Payton of Payton Hall;
    • C1. John de Payton;
      • D1. Robert de Payton, lord of Ufford, lord justice of Ireland;
        • E1. Sir Robert de Ufford, 1st lord, lvd:1279/1316, m. Cecily de Valoines;
          • F1. Robert de Ufford, 1st Earl of Suffolk , lvd:1298/1369, m. Margaret Norwich;
            • G1. Margaret de Ufford, m. Sir William Ferrers;  <==  Ferrers family
            • G2. Cicely de Ufford, m. Sir John de Willoughby;  <==  Willoughby family