William was born at
Mullica Hill, Gloucester Co., New Jersey, on 1 December 1798. He was the son of
Jacob Spicer Horner and
Rebecca Ann Eastlack. He married
Sarah Elizabeth "Sally" Royce on 27 May 1819. William was listed as the head of a family on the 1820 Census at
Washington Co., Indiana. He was census 1830 in 1830 at
Washington Co., Indiana. He was census 1840 in 1840 at
Jackson Twp., Washington Co., Indiana. William was listed as the head of a family on the 1850 Census at
Jackson Twp., Washington Co., Indiana. William died on 2 December 1872 at
Fredericksburg, Washington Co., Indiana, at age 74. His body was interred in December 1872 at
Posey Twp., Washington Co., Indiana, at Horner Cemetery.