Guillaume was born about 1085, the son of Guy de Thiers but his mother is unknown. The place is not known.
He died about 1166. The place is not known.
His wife was NN de Navilly, who he married in ABT 1120. The place has not been found. Their only known child was Guillaume IV (1127-1202).
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Guillaume I de Thiers |
Guy de Thiers |
Guillaume II de Thiers |
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Adélaïde de Chalon |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | ABT 1085 |
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| Death | ABT 1166 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | comte Thiers et de Chalon-sur-Saône |
Note 1