Anna of Brunswick-Grubenhagen-Einbeck
* Margaretha ( 1442–1479 ) , married in 1463 with Marquess Frederick I of Mantua ( 1441–1484 ) 
<triplet> Margaretha <subj> Marquess Frederick I of Mantua <obj> spouse <triplet> Marquess Frederick I of Mantua <subj> Margaretha <obj> spouse