skos:altLabel | - Robert
- half-brother
- Robert Morton
- Earl of Cornwall
- Mortain
- Count Robert de Mortain
- Count Robert of Mortain
- Count Rotbert of Mortrain
- Count of Mortain
- Earl Robert of Mortain
- Robert de Mortain
- Robert of Mortain
- Robert, Comte de Mortain
- Robert, count of Mortain
- Robert, earl of Mortain
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