My fifth-great-grandfather Carl/Charles William Tornquist Sr. was originally from Öland, Kalmar, Sweden. His name is various spelled Karl/Carl/Charles, Vilhelm/William/Valhalm, and Turnquest/Tornquist/Turnquist/Tornquest in Bahamian records.

I know that he was born in 1776 on Öland and received British citizenship in the Bahamas in either 1814 or 1819. He died in the Bahamas in 1842. His wife was Mary Eliza Darvill of the Bahamas, and they had four children:

* Charles William Turnquest, Jr. (b. February 21, 1813 in Stevens, Long Island, Bahamas - d. March 17, 1876 on Long Island)
* Mary Eliza Stevens Turnquest Knowles (b. July 8, 1781 in Nassau)
* James Edward Turnquest (b. c. 1816 in Steven's - d. September 25, 1871)
* John Robertson Turnquest, Sr. (b. c. 1820 in Steven's - d. November 29, 1886)

I have been unable to find any other details on him in Sweden, which is what I'd really like.

Can anyone help me track down this mystery ancestor? Is there any particular settlement on Öland that is historically known for being home to Tornqvists?