One example is that of Dorothy Spreckels (brief obituary here), daughter of sugar magnate Adolph Spreckels and former artists' model Alma Spreckels (who according to the link referred to Adolph as her "sugar daddy"). The Spreckels donated the San Francisco Legion of Honor to the city in 1924.
Their youngest daughter, Dorothy, was also interested in art and was painted by Dalí in 1942. This portrait is in the Legion of Honor, but not always on display. The museum's link to it is here. And here is an account of Dalí's doings in the Bay Area in 1941-42.
I visited the Legion of Honor in December 2016, but didn't notice Dorothy's portrait. But I did see and photograph it three years earlier.