Ralph de Coucy I & Agnes of Hainault 
They had a daughter named Yolande.
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Personal Details
Ralph de Coucy I
Ralph was born in 1139 in Boves, Somme, France.1 He died as a war casualty, siege of Acre, at the age of 52 on November 1st, 1191 in Acre, Jerusalem.1
Agnes of Hainault
Agnes was born in 1142 in Mons, Hainault, Belgium.2 She died at the age of 26 in 1168.1
1 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I9917&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=michaelrneuman&id=I015938
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=michaelrneuman&id=I015938