Owen T. Williams was born on October 1, 1829, in Denbigh, Denbighshire, Wales, the son of Elizabeth Davies and Thomas. He married Margaret Pritchard in 1853 when he was 24 years old. They had nine children in 24 years. He died on December 4, 1914, in Washington, Pennsylvania, having lived a long life of 85 years.
He immigrated to New York in July 31, 1860
Owen served in the military on November 6, 1861, in Pennsylvania when he was 32 years old. He was a private from Pennsylvania, and he fought for the Union during the Civil War.