rdfs:comment
| - Robert de Ferrers, 2. Earl of Derby (auch Robert II de Ferrers) († 1159) war ein anglonormannischer Magnat. (de)
- Robert II de Ferrers, 2nd Earl of Derby (c. 1100 – 1162) was a younger, but eldest surviving son of Robert de Ferrers, 1st Earl of Derby and his wife Hawise. He succeeded his father as Earl of Derby in 1139 (William, his elder brother, having been murdered in London sometime before). He was head of a family which controlled a large part of Derbyshire including an area later known as Duffield Frith. (en)
- Роберт де Феррерс Младший (англ. Robert de Ferrers; ум. ок. 1160) — англонормандский аристократ, 2-й граф Дерби (с 1139), участник гражданской войны в Англии 1135—1154 годов, первоначально на стороне короля Стефана, с 1153 года — на стороне Генриха Плантагенета, основатель аббатства . (ru)
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