Thierry of Lorraine, Count of Flanders Count of Flanders (1100-1168) (1100–1168) Parents Gertrude of Flanders Theodoric II Children Laurette of Flanders Peter of Flanders Matthew of Alsace Baldwin de Flandre Matilda de Flandre Gertrude of Flanders, Countess of Savoy Margaret I, Countess of Flanders Philip I, Count of Flanders Siblings Simon I, Duke of Lorraine Adelaide of Leuven Henri of Lorraine Gertrud of Lorraine Ermengarde de Lorraine Partners Sibylla of Anjou Swanhilde Margaret of Clermont
