Man With The Branded Hand

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Captain Jonathan Walker was a Massachusetts boy who went to sea.  He was incarcerated in Pensacola, Florida, at which time he was branded with the letters "S.S." [slave stealer].  Captain Walker settled in Muskegon, Michigan, and that is where he died.

From Michigan History, Volume 5:

Whittier has immortalized in verse the Man with the Branded Hand.

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Others listed in Walker's narrative concerning his incarceration and trial in Florida included Francis Torward [Francisco Touart], Robert C. Caldwell, Walker Anderson, and Ebenezer Dorr.

In 1873 there was a second marriage in Milford, Massachusetts.  His parents were named as Seth Walker and Mercy Bassett.