[2][3][4] Ulrich was born in 1413, the youngest child of Count Eberhard IV and his wife Henriette, Countess of Mömpelgard.

[5] Eberhard died unexpectedly of illness on 2 July 1419, while Ulrich and his older brother Ludwig were both minors.

In 1444 Ulrich supported the house of Habsburg under King Friedrich III in the Old Zürich War in the fight against the Old Swiss Confederacy.

Count Ulrich's main opponent under the imperial towns was Esslingen which reduced the income of the county Württemberg by rising it's his duties clearly.

Ulrich joined the group of Frederick III, crowned emperor in 1452, and Margrave Albrecht Achilles of Brandenburg.

In the Mainz Diocesan Feud of 1461 to 1463, which broke out shortly after, he supported Archbishop Adolf II of Nassau against his deposed predecessor Diether von Isenburg and Frederick I of the Palatinate.

[4] In 1473 went Ulrich and Eberhard V a house contract one which should regulate the common hereditary result and aspire to the reunion of both württembergian land parts.