Isabel de Clare

Maud de Lacy, Countess of Lincoln

Maud de Lacy, Countess of Lincoln (1223 – 1287) was the daughter of John de Lacy, Earl of Lincoln (1192-1240) and Margaret de Quincy (1208-1266). She married Richard de Clare, 6th Earl of Hertford. Their known children were:

1) Isabel de Clare (1240-1270), who married William of Montferrat;

2) Gilbert de Clare, 7th Earl of Hertford;

3) Thomas de Clare (1245-1287);

4) Bogo de Clare (1248-1294);

5) Margaret de Clare (1249-1313), who married Edmund, Earl of Cornwall;

6) Rohese de Clare (1252-after 1299), who married Roger de Mowbray; and

7) Eglentina de Clare, who died in infancy in 1257.

William VII, Marquess of Montferrat

From Wikipedia, the free encyclopedia

William was the eldest son of Boniface II and Margaret of Savoy. He was named his father's heir in a testament of 1253, the year of his father's passing and his succession. He remained under his mother's regency until 1257. Upon attaining his majority, he married Isabella, daughter Richard de Clare, in 1258. William's mother was a first cousin of Eleanor of Provence, queen consort of England, and it was through the latter's influence that the marriage was arranged.