Burchard was the son of Adalbert II the Illustrious, Count of Thurgau,[1] and his wife Judith of Friuli.
He succeeded the Welf scion Ruadulf in the borderlands of Raetia, mentioned as marchio (margrave) in 903 and dux (duke) in 909.
To further increase his influence, Burchard entered into a conflict with the Swabian count palatine Erchanger and Bishop Solomon III of Constance, who both were loyal supporters to the later East Frankish king Conrad I.
[3] He was found guilty by a tribal council and executed,[4][3][a] along with his brother, Count Adalbert III of Thurgau.
His son, Burchard II, and his daughter-in-law, Regelinda, left for Italy, either exiled or taking refuge.