Burkhard IV of Hohenberg
Burkhard was born about 1201 in Hohenberg, Schwarzwaldkreis, Wurttemberg.  He died on July 14th, 1253.

 Mathilde of Tubingen
Mathilde was born about 1205 in Tubingen, Schwarzwaldkreis, Wuttemburg.

 Gertrude von Hohenburg
Gertrude was born about 1225 in Hohenberg, Germany.  She died on February 16th, 1281.