Dietrich III. v.Cleve	Adelheid v.Sulzbach	Florenz III. v.Holland * of Ross	Ada of Huntingdon
Dietrich IV. v.Cleve		Margarete v.Holland

Dietrich V. Graf v.Cleve*c.1190/1195/c.1200, +[13.5.,26.6.]1260/1262

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Do you see errors?/Do you have hints?