Charnock was the second son of Robert Charnock, of Charnock or Astley, Lancashire. He lived at Astley Hall, Chorley, Lancashire. In 1624, he was elected Member of Parliament for Newton in the Happy Parliament.William Duncombe Pink, Alfred B. Beaven The parliamentary representation of Lancashire, (county and borough), 1258-1885, with biographical and genealogical notices of the members, &c. (1889)
