Background
Marshall was born on December 3, 1822, in Lyme, New Hampshire, to Macaiah and Martha (Southard) Marshall.
Marshall was born on December 3, 1822, in Lyme, New Hampshire, to Macaiah and Martha (Southard) Marshall.
Marshall attended Thetford Academy in Thetford, Vermont, and graduated from Dartmouth College in 1848.
Marshall taught school during his college vacations. From 1849 to 1851 Marshall was the principal of Fitchburg High School in Massachusetts. Marshall studied law with the firm of Torrey & Wood in Fitchburg, Massachusetts, and in Concord, New Hampshire, with Franklin Pierce and Josiah Minot.
Marshall was admitted to the New Hampshire Bar in 1852.
Marshall saw no one firing, shouted to the shooters to be careful, then stood up and was shot in the abdomen. Marshall died at his home later that day.
Marshall was shot with a minnie ball fired by the City Guards, a newly formed militia company that was engaged in target practice in a pasture bordering the lake.