Isabel de Ros

  Noted events in his life were:

• Background Information. ¹⁴¹
Sir Marmaduke de Thwenge, Knight, married Isabella, the daughter of Sir William de Ros, of Igmanthorpe, Yorkshire. Her mother is said to be Eustache, widow of Nicholas de Cauntelo, and daughter and heir of Ralph Fitz Hugh. Isabella died in 1309, and Marmaduke died shortly before 1322/23.

~ Cokayne's Complete Peerage, 2nd Edition, (Thweng), Vol. XIIA, pp. 270-271

Isabel married Sir Marmaduke de Thwenge Knight, son of Sir Marmaduke de Thwenge Knight and Lucia de Brus. (Sir Marmaduke de Thwenge Knight was born in Sep 1256 in Kilton Castle, Cleveland, Yorkshire, England ⁷⁷⁰ and died on 16 Mar 1322 in Yorkshire, England ⁷⁷⁰.)