the closest match for 1850:
James Marshall 30
Maria Marshall 31
John J Marshall 10
Arenientie Marshall 5
Lorelda Marshall 3
James T Marshall 0
Home in 1850: New Albany, Floyd, Indiana
maybe's
Name: James T. Marshall
Side: Union
Regiment State/Origin: Indiana
Regiment Name: 9 Indiana Cavalry
Regiment Name Expanded: 9th Regiment, Indiana Cavalry
Company: F
Rank In: Private
Rank In Expanded: Private
Rank Out: Private
Rank Out Expanded: Private
Film Number: M540 roll 47
Name: James T Marshall
Residence: Marion County, Indiana
Enlistment Date: 23 Dec 1863
Rank at enlistment: Private
State Served: Indiana
Survived the War?: Yes
Service Record: Enlisted in Company F, Indiana 9th Cavalry Regiment on 23 Dec 1863.
Mustered out on 05 Aug 1864.
Sources: Report of the Adjutant General of the State of Indiana