Count Egon of Freiburg I & Katharine von Lichtenberg 
They had a daughter named Sofie.
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Personal Details
Katharine von Lichtenberg
Katharine was born in 1252 in Urach, Freiburg, Baden, Germany.1 Katharine is no longer alive.
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I32865&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I32762&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I32762&style=TABLE