The outlaw that was executed by hanging "in the spring of '25" is identified as the HIGHWAYMAN.
This is one of the characters in the song, "American Remains", sang by The Highwaymen. The group consisted of Johnny Cash, Waylon Jennings, Willie Nelson and Kris Kristofferson. Other characters in the song were a sailor, a dam builder, and a pilot of a starship.
This is the first stanza of the song:
"I was a highwayman. Along the coach roads I did ride
With sword and pistol by my side
Many a young maid lost her baubles to my trade
Many a soldier shed his lifeblood on my blade
The b*stards hung me in the spring of twenty-five
But I am still alive."