He was born about 750
AD in
Narbonne,
France the son of Warin I, documented as count in Thurgau, and his wife
Adalindis, a daughter of Duke
Hildeprand of Spoleto and his wife Regarde. Isanbart himself was first mentioned as a Thurgau count in 774 and made significant donations to the
Abbey of Saint Gall. He was Greve,
Comte, of
Altorf and Master of the Palace. His wife was Thiedrada (Thietrate), of
Carolingian origin, and he was the father of •
Hedwig (Heilwig; d. after 833), married Count
Welf; • Adalung, abbot of
Lorsch 804–837; • Adalindis With a second wife he had
Hunfrid I of
Istria, Guelph of
Andechs and the Brother of Bouchard "the Constable", and
Alberic I de Narbonne. He died after 806 AD in Saxony. == References ==