Count Hermann of Henneberg I & Countess Margaretha of Holland 
Hermann and Margaretha were married on July 12th, 1249.1 They had a son and a daughter, named Poppo and Jutte.
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Personal Details
Count Hermann of Henneberg I
Hermann was born in 1224 in Coburg, Sachsen-Coburg-Gotha, Thuringia.1 He died at the age of 66 on December 18th, 1290.1
Countess Margaretha of Holland
Margaretha was born in 1230 in Hertogenbosch, Noord-Brabant, Netherlands.1 She died at the age of 47 on March 26th, 1277.1
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Children
Countess Jutte of Henneberg
Jutte was born in 1247 in Coburg, Saxe-Coburg-Gotha, Thuringia.1 She died at the age of 80 on May 8th, 1327.1
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I33996&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=bevangenealogy&id=I34247
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=bevangenealogy&id=I34247