Bertrand was born about 1215, the son of unknown parents. The place is not known.
He died after 1260. The place is not known.
His wife was Blanche de Coëtquen, who he married in 1235. The place has not been found. Their only known child was Pierre II (c1260-c1337).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1215 |
|
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| Death | AFT 1260 |
|
Note 1
Note 2
continued in Bourbon tree