"Captain James Nelson Barker was born in Philadelphia June 17, 1784."
"On the commencement of hostilities he was appointed captain of artillery, and in 1813 commanded Fort Mifflin...he raised two companies of artillery and marched with them to the Canadian frontier."
A biographical notice of Captain Barker:
James Nelson Barker was the son of the Honorable John Barker, one-time Mayor of Philadelphia, and ex-Revolutionary soldier. After the fashion of the day, he was trained in the old-time courtesy and in the old-time manner of defending one's honor with the sword, for it is recorded that he was once severely wounded in a duel.
He lived until March 9, 1858. [Source]