• Married (1): Abt 1080
• Married (2): 15 Aug 1095, Han-sur-Lesse, near Rochefort, Walloon, Belgium
• Died: 23 Jan 1115

  Research Notes:

The Notitiæ Fundationis Monasterii Bosonis-Villæ records the succession of "dux Theodericus puer parvulus Gerhardi ducis filius", although, considering the estimated birth date range of his mother, Thierry must have been adult when his father died.

He succeeded his father in 1070 as THIERRY II Duke of Lorraine, opposed by his brother to whom he ceded territories which became the county of Vaudémont in Apr 1073 after waging war for two years. Weakened by this conflict, Louis Comte de Mousson claimed the title duke from Duke Thierry. "Hadewidis ductrix" founded the abbey of Châtenois by charter dated to after 1075, confirmed "post obitum ductricis Hadewidis" by "dux Theodericus filius eius". The Codex de l’Angelica records “Haduydis ducissa” donating a serf to Remiremont, with the consent of “filiis suis duce Theoderico atque comite Girardo”, undated. During the investiture crisis, Duke Thierry supported Emperor Heinrich IV who enabled him to take control of Metz after expelling Hermann Bishop of Metz. Pibo Bishop of Toul granted privileges to the monastery of Toul Saint-Léon and named "dux Theodericus et Simon puer eius filius, et frater ducis Gerardus comes et Renardus comes Tillensis" by charter dated 10 Oct 1091. Emperor Heinrich V granted him the title "Marquis" in [1114]. “Theodoricus...Lotharingorum princeps, dux et marchio” donated “quidquid continetur a rivo de Grimommont usque ad nemus de Granviller et usque ad nemus de Stivay” to Saint-Dié, at the request of “Hugonis de Distorchio”, in the presence of “suorum filiorum...Simonis, Theodorici, Gerardi, Henrici”, by charter dated 19 Mar 1114.

The Obituaire de Saint-Mansuy records the death "30 Dec" of "Theodoricus dux". ¹