Her parents were Anthony Oster (France) and Charlotte Haner (Baden).
https://www.findagrave.com/memorial/144572536/charlotte-rebennack
"United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MFP8-3ZN : 14 December 2017), Charlotte Ostar in entry for A Ostar, 1860.
"Louisiana, Parish Marriages, 1837-1957," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QKJW-K12J : 12 March 2018), A J Rebennack and Charlotte Oster, 15 Jan 1880; citing Orleans, Louisiana, United States, various parish courthouses, Louisiana; FHL microfilm 907,694.
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Featured National Park champion connections: Charlotte is 17 degrees from Theodore Roosevelt, 25 degrees from Stephanus Johannes Paulus Kruger, 20 degrees from George Catlin, 17 degrees from Marjory Douglas, 24 degrees from Sueko Embrey, 17 degrees from George Grinnell, 27 degrees from Anton Kröller, 20 degrees from Stephen Mather, 25 degrees from Kara McKean, 18 degrees from John Muir, 21 degrees from Victoria Hanover and 26 degrees from Charles Young on our single family tree. Login to find your connection.