This is the son of Jacob Rawn and Hannah Clark born about 1844 in Ohio. He had a brother named Eugene Rawn. I believe that the mother, Hannah Clark died at the birth of Lucius Clark Rawn.
Jacob Rawn remarried on March 20, 1851 to Sarah Needles. He and Sarah left Ohio and relocated to Missouri prior to 1860. Sarah's brother, Enoch Needles also ended up in Missouri. Jacob can be found in the 1860 census with his father in Audrain County, Missouri. The post office was the Mexico post office.
Source Citation: Year: 1860; Census Place: Salt River, Audrain, Missouri; Roll: M653_606; Page: 0; Image: 186.
Household Members: Name Age
Jacob Rawn 43
S A Rawn 36
J B Rawn 16
E W Rawn 13
M E Rawn 7
Sarah Needles Rawn passed away in March 1863. It was later that year that Joseph entered the service.
Name: Joseph Rawn ,
Residence: Mexico, Missouri
Enlistment Date: 31 Aug 1863
Side Served: Union
State Served: Iowa
Service Record: Enlisted in Company F, 3rd Cavalry Regiment Iowa on 21 Apr 1863.
Enlisted as a Private on 31 August 1863 at the age of 18.
Promoted to Full 8th Corporal on 1 Mar 1865.
Killed Company F, 3rd Cavalry Regiment Iowa on 31 Mar 1865 at Montevallo, AL.
The father, Jacob Rawn does indeed appear to have filed for his pension.
Jacob Rawn died in 1894 in Missouri. He was buried in Linn county. He was born on Feb 4, 1817 in Trappe, Montgomery County, Pennsylvania. He is the son of Joseph Rawn and Elizabeth Schnell.