Roger de Toeni III, Lord of Flamstead 1
- Born: 1104, Conches, Eure, Haute-Normandie, France
- Marriage (1): Ida "Gertrude" de Hainault
- Died: Feb 1162, Flamstead, Hertfordshire, England at age 58
Roger married Ida "Gertrude" de Hainault, daughter of Baldwin III, Count of Hainaut and Yolanda van Gelre Vrouwe van Dodewaard en Dalen, von Wassenberg, Grafin von Gelre von Wassenberg, Countess of Hennegau. (Ida "Gertrude" de Hainault was born in 1190 in Flamstead, Hertfordshire, England and died in 1194 in Garsington, Headington, Oxfordshire, England.)
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