His parents were Pierre Elgart and Marie Etchevers/Etcheverry according to his birth and marriage record. There is no record of this couple marrying in the Aldudes.
Bertrand Elgart who was born in 1859 in Anglesarenia would marry Jeanne Ardaiz in Urepel in 1879. He would later immigrate to South America with his wife and sons. They would also have children in South America where he died in 1909. This information was provided by his great granddaughter. Therefore, it is possible that the Bertrand Elgart in California in 1875 was not the same person. Need additional verification either way before this birth information is changed.
1859 - 