1. | Robert fitz Swein and died. Robert married . Unknown [Group Sheet]
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2. | Henry of Essex (1.Robert1) and died. Henry married Alice. Alice and died. [Group Sheet]
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3. | Agnes of Essex (2.Henry2, 1.Robert1) and died. Agnes married Aubrey de Vere, 1st Earl of Oxford. Aubrey and died. [Group Sheet]
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4. | Robert de Vere, 3rd Earl of Oxford (3.Agnes3, 2.Henry2, 1.Robert1) and died. Robert married Isabel de Bolebec. Isabel and died. [Group Sheet]
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