When Elijah Wilcox was born in 1810, in Homer, Homer, Cortland, New York, United States, his father, Thomas Wilcox, was 41 and his mother, Rebecca Stillman, was 34. He married Sally Ann Cummings on 16 May 1833, in Bath, Bath, Steuben, New York, United States. They were the parents of at least 5 sons and 5 daughters. He died on 22 May 1874, in Bath, Bath, Steuben, New York, United States, at the age of 64, and was buried in Bath, Bath, Steuben, New York, United States.