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William de Ferrers (-bef1139)+Robert de Ferrers, 2nd Earl of Derby (-1162) +
Hawise de Vitré (c1069-) +
Hawise de Vitré (c1069-) +
Robert de Ferrers +
Bertha Roberts (c1040-) +
Robert Ferrers, 1st Earl of Derby +
[[wikipedia:en:Robert de Ferrers, 1st Earlwikipedia:en:Robert de Ferrers, 1st Earl of Derby<div class="context-link"></div><new note>Robert de Ferrers, 1st Earl of Derby at thePeerage<new note>Robert de Ferrières, 1st Earl of Derby at Genealogics<new note>http://stirnet.com/HTML/genie/british/ff/ferrers1.htmnet.com/HTML/genie/british/ff/ferrers1.htm +
Ferrers +
1st Earl of Derby +
Robert de Ferrers, 1st Earl of Derby +