I stumbled onto this woman whose tombstone in San Francisco says she is from Curacao. In 1860 and 1870 she is living with an Esther L Dias, who I think may be her mother (but could be her sister, the ages vary on the census). One of the census entries says Rachel is from Barbados. She had a child born in Louisiana. My guess is that her birth name was Rachel Lopes Dias, but that's just a guess.https://www.geni.com/people/Rachel-Glouber/6000000064388250105