Career
Both were sons of Count Ludwig World War II Hartmann accompanied Otto IV to Rome for his coronation as Holy Roman Emperor and served repeatedly as a witness in documents set up by the emperor in Italy. Around 1200, Hartmann married the heiress to the county of Veringen in Upper Swabia, thus acquiring lands including Altshausen, Burg Alternate-Veringen and the county of eastern Apphagaues. This article is translated (poorly) from that on the German Wikipedia.