I have a 5th great grandfather (Antonio Manuel) who reportedly was picked up off the Portugal coast by a British Man of War.
Verbal
family history simply says he was picked up off the shore of Portugal
as a child. My DNA shows associations with the islands of Pico and
Faial. He was in NYC at the end of the Revolutionary War and died in
Ontario in approx 1816. Best guess is that he was born in 1750s.
I
see different spellings of the surname in the document you posted and
"Manuel" seems prominent, so I'm interested in the writing. Do you
have a date for the document, or translation?