Graf Albrecht von Hapsburg IV 
Details of Albrecht's family with Grafin Heilwig von Kyburg
Sources/Citations
{[Ancestry of David A. Blocher]}, http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=dblocher&id=I388989
{[Ancestry of David A. Blocher]}, http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=dblocher&id=I388989
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