Thierry III of Lorraine , Count of Flanders 
Thierry III of was born about 1099 in Alsace & Lorraine, France. Thierry III of's father was Thierry II Duke of Alsace Lorraine and his mother was Gertrude of Flanders. He had a half-brother and a half-sister, named Simon I Duke de and Adelheid (Adelaide) de.
‌Thierry III of and Sybil d' were married in a religious ceremony in 1131 in 3rd husband 2nd wife. They had a son and a daughter, named Matthew d' and Margaret of.
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Children
Matthew d' Alsace , Count of Boulogne
Matthew d' was born in 1137 in Alsace, France. He died at the age of 36 on July 25th, 1173 in Driencourt, Somme, Picardy, France (battle).
Margaret of Margaret of , Countess of Flanders/Alsace
Margaret of was born before 1145 in Alsace, Lorraine, France. She died on November 12th, 1194.
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