Also known as Dietrich.
Events
Date of Birth: unknown.
Place of Birth: unknown.
Date of Death: 30 December 1115.
Place of Death: unknown.
The date is given by Poull (p. 25).
Relationships
Father: Gerhard, duke of Upper Lotharingia.
This relationship is given by Rieckenberg, by Weller, and by Poull (p. 23).
(probable) Mother: Hadwide de Namur.
This relationship is given by Rieckenberg. Poull regards the connection to Namur as unproven. Weller regards it as probable.
Spouse: Hedwig von Formbach. Married about 1080.
This relationship is by Poull (p. 25) and by Weller (p. 536).
Spouse: Gertrude of Flanders. Married 15 August 1095 in Han-sur-Lesse.
This relationship is given by père Anselme (2:719), by Pirenne, by Weller (p. 538), and by Poull (p. 25).
Children (by Hedwig):
(Complete source citations for facts about the children on this page are currently outside of the scope of this project. Most information below comes from Cawley.)
Simon I (died 13 or 14 January 1139), duke of Lorraine, married Adelaide of Louvain.
Gertrude (Petronilla) (died 23 May 1144) married Floris II, count of Holland.
Ida married count Sieghard of Burghausen on 5 May 1104.
Children (by Gertrude):
Thierry (about 1000 - 17 January 1168), count of Flanders, married (1) Swanhild; married (2) Sybil d’Anjou.
Gerard.
Henri (died 6 June 1165), bishop of Toul.
Baudouin.
Ermengarde married Bernard Grossus, lord of Brancion.
References
Anselme de Sainte-Marie. Histoire Généalogique et Chronologique de la Maison Royale de France, des Pairs, Grands Officiers de la Couronne, de la Maison du Roy et des Anciens Barons du Royaume. 9 Volumes (Paris: 1726-1733).
Cawley, Charles. “THIERRY de Lorraine” in Medieval Lands: A prosopography of medieval European noble and royal families.
Pirenne, U. “Thierry d’Alsace” in Biographie Nationale de Belgique Volume 24 (Bruxelles:1924) pp. 871 - 882.
Poull, Georges. La Maison ducale de Lorraine, (Presses Universitaires de Nancy, 1991).
Rieckenberg, Hans Jürgen. “Gerhard” in Neue Deutsche Biographie 6 (1964), S. 268 [Onlinefassung]
Weller, Tobias. Die Heiratspolitik des deutschen Hochadels im 12. Jahrhundert. (2004: Böhlau Verlag).