Antoine Borel

[5] Borel was a prominent philanthropist in San Mateo, California, where he had established a summer home in 1874 on the advice of their family's doctors.

[3]: 117 Antoine Borel and his wife, Grace (née Canitrot, 1849–1923), were married in 1871[9] and had seven children,[1] six of which were living at the time of his death:[10] five daughters and one son.

He had returned to Switzerland in July 1914 with members of his family for health reasons,[2] and took up residence there after being stranded by World War I.

[23] That site was west of El Camino Real near present-day SR 92 in San Mateo;[1][24] Antoine Borel used it as his summer residence.

[29] The mansion on the Homestead site was started in 1868 by Sidney V. Pringle, then sold to Pioche, who remodeled it before it was acquired by Borel with the estate.

[38] Boston Private in turn was acquired by SVB Financial Group in 2021, then auctioned in 2023 following the collapse of Silicon Valley Bank.