Count Engelbert of the Mark & Mathilde d' Arenberg 
Engelbert and Mathilde were married on January 25th, 1299.1 They had a son and two daughters, named Adolf, Irmgard and Richardis.
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Personal Details
Count Engelbert of the Mark
Engelbert was born in 1282 in Katzenelnbogen, Hessen-Nassau, Prussia.1 He died at the age of 46 on July 18th, 1328.1
Mathilde d' Arenberg
Mathilde was born in 1286 in Mark Hamm, Westfalen, Prussia.1 Mathilde is no longer alive.
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I33377&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=bevangenealogy&id=I33409
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=bevangenealogy&id=I33409