Captain Isaac Knight - Isaac Knight (b. Jul 17, 1817) of Portland, Maine, was a brother of my great, great grandfather, Henry Knight (b. Jul 7, 1811).

An account of Isaac's 82nd birthday (July 17, 1899):

Isaac's Obituary:

Clippings about the stores Isaac ran in Portland after he retired from the sea (in the late 1850s):

The Portland Directories give this store's address as 15 Middle Street.

In the picture below, Isaac is in the doorway at the left. (I know, it's nearly impossible to see him there.) The address from the Portland Directories was 105 Exchange Street.