11. Hiram H. HARMON was born in 1810.3 He died before May 1836 at the age of 26.
I have been unable to find any likely Harmon that could be this Hiram in either 1840 or 1850. The following deed in 1836 would suggest that Ruth was a widow by 1836 - a married female could not have been selling property.
One online database stated that Hiram died 1831 in the Black Hawk War.
DB A, p.380
20 Feb 1827 James Harmon & Philadelphia his wife of Marion Co to Elizabeth Harmon, Charles and Hirum Harmon [Charles & Hiram his brothers, perhaps his mother Elizabeth]. $25. Tract: on South end of South half of the 80 acres of the NW quarter and west half of S14, T17, Range ___ East. Bounded begin middle stake between sections 14 & 15 on bank of Eagle Creek ….20 acres.
Signed: James Harmon, Philadelphia Harmon.
Presence of Jacob Sheets, Andrew Sheets.
Rec. 22 Feb 1837
Marion Co, DB H, p.147
5 May 1836 Alexus Jackson & Mary his wife and Ruth Harmon wife of Hiram Harmon of Marion Co to Charles Harmon. $220 paid by Charles. All that tract South end of NW quarter of S14, T17N, Range 2 E, containing 40 acres. In district of lands to be sold at Indianapolis land office. Signed: Alexus Jackson, Mary (x) Jackson, Ruth (x) Harmon
Wit: William Harmon Senr, James A. Carter
6 May 1735, Acknowledged by Alexus; Mary relinquished. Rec. 22 Apr 1837
Hiram H. HARMON and Ruth PARRISH were married on 1 May 1831 in Marion County, Indiana.3,6 Ruth PARRISH was born (date unknown).