Robert was the son of Simon IV de Passavant and Isabelle de Joinville. The date and place of his birth have not been found.
Simon IV de Passavant |
Simon III de Clefmont |
Simon II de Clefmont |
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Isabelle de Joinville |
Simon I de Joinville |
Geoffroy IV de Joinville |
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Ermengarde de Montclair |
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