Johann I+ Guelph
Johann I+ was born about 1243.  He died on December 13th, 1277.

 Liutgarde Von+ Holstein-Itzehoe
Liutgarde Von+ was born about 1251.  She died on February 28th, 1290.

 Otto II Guelph
Otto II was born about 1270.  He died on April 10th, 1330.

 Elizabeth+ Guelph
Elizabeth+ was born about 1272.  She died in 1294.