Ruppenthal Genealogy . . .

Marmanduke de Thweng, lord of Kilton
March 4, 1234, Yorkshire, North Riding, Kilton England - December 6, 1294, Yorkshire, Cleveland England

Lucy de Brus
abt 1191, Yorkshire, Skelton Castle England - March 29, 1282, Yorkshire, Castleton England
Married: ?? - ??

Marmanduke de Thweng, 1st baron de Thweng
abt 1250, Yorkshire, North Riding, Kilton England - April 23, 1323, Yorkshire, North Riding, Kilton England

Margaret de Thweng, baroness Neville
abt 1254, Derbyshire, Castleton England - ??

Robert de Thweng
abt 1255, Yorkshire, Brotten, Kilton Castle England - abt 1284, Yorkshire, Cleveland England

John Thweng
1261, Yorkshire, Cleveland, Kilton Castle England -
December 2, 1330, Yorkshire, North Riding, Comborough England

Alice de Twenge
abt 1265, Cumberland, Kelton Castle England - 1325

William de Thweng
?? - ??

Thomas de Thweng
?? - ??