Born: Circa 1828, Ireland.
Died: November 6, 1876, Washington, DC.
Buried: Mount Moriah Cemetery, Philadelphia, Pennsylvania.
Nicholson emigrated to America around age 25.
He lived in Philadelphia, Pennsylvania, for almost two decades, and was a member of the Wharton Street Methodist Episcopal Church (William Kirkpatrick was there at the same time).
Around 1871, he moved to Washington, DC, and worked as a clerk in the Post Office Department.
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