Elia Wilkinson was the daughter of Frederick and Amanda (Cahill) Wilkinson.

He was the son of Waleran I of Limburg and Jutta, daughter of Frederick, Duke of Lower Lorraine.

Ferdinand Albert married Christine (30 October 1648 - 18 March 1702), daughter of Frederick, Landgrave of Hesse-Eschwege, in 1667.

The skull was in the custody of Anna Mitchell-Hedges, the adopted daughter of Frederick.

Ludmilla of Bohemia (died 14 August 1240) was a daughter of Frederick, Duke of Bohemia, and his wife, Elizabeth of Hungary.

Betty Driver was born in 1920 at the Prebend Nursing Home, Leicester, the elder of two daughters of Frederick and Nellie Driver.

Baldwin first married Ogive of Luxembourg, daughter of Frederick of Luxembourg, by whom he had a son and heir:

John Bell (1774-1849) married Eliza Smith, daughter of Frederick and Sarah Smith.

His first wife was Hedwige (died 1085 or 1090), daughter of Frederick, count of Formbach.

Born Edith Ellen Gray, she was the daughter of Frederick and Edith Henrietta Gray.