Pedro Sainsevain | |
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| Born | Pierre Sainsevain November 20, 1818 Béguey, France |
| Died | October 4, 1904 |
| Occupation(s) | Vintner, ranchero |
| Spouse | Paula Suñol |
Don Pedro Sainsevain (né Pierre; November 20, 1818 – October 4, 1904) was a French-born Californian vintner, ranchero, and a signer of the Californian Constitution in 1849. He is best known for his role in Californian winemaking, as one of the first producers of sparkling wine in California. He also was an early participant in the California Gold Rush.