William IV de Windsor
William IV was born in 1230 in Bradenlove, Buckshire, England.  He died at the age of 49 in 1279.

 Margaret Dorkenford
Margaret was born in 1253 in Bradenlove, Buckshire, England.

 Margaret de Windsor
Margaret was born in 1268 in Bradenlove, Buckshire, England.

 Richard de Windsor
Richard was born in 1275 in West Hakebourne, Berkshire, England.  Richard is no longer alive.

 Walter de Windsor
Walter was born before 1279.