When William Meredith was born on 3 June 1795, his father, Edward Meredith, was 51 and his mother, Elizabeth Margaret Price, was 53. He married Mary Williams in 1817, in Wales, United Kingdom. They were the parents of at least 3 sons and 2 daughters. He lived in Llanwenarth Ultra, Monmouthshire, Wales, United Kingdom in 1851. He died on 7 December 1850, in Paris, Kenosha, Wisconsin, United States, at the age of 55, and was buried in Union Grove, Racine, Wisconsin, United States.