Theodore Horner was likely Theodore B. Horner, residing in Cumberland Township, Adams County, Pennsylvania. Theodore Horner was recorded in the 1860 census of Cumberland Township, Adams County, Pennsylvania as 15 years old, born in Pennsylvania. He is identified in Horner family material as a child of David W. and Susan Robertson Horner. A later local notice names Theodore B. Horner as an administrator of David W. Horner’s estate. The entry placed him in dwelling 490, family 547, in the same household as David Horner and Susan Horner and other residents. The census also marked him as having attended school within the previous year.
Age in 1860: 15
Sex: M
Race: W
Birthplace: Pennsylvania
Township: Cumberland
Dwelling Number: 490
Family Number: 547
Identification Status: Probable
Confidence Level: Probable
Evidence Strength: Strong Circumstantial