I have a Maude Viola Chew, b.1909, Montana, in my data base. Her father was Ernest H. Chew, b.Jul 1878,Iowa, died 1930 Iowa. Ernest's father was Siddons Griffith Chew, b.1855, Ia, d.1947, Ia. They did not come out of Canada. The line goes back from Siddons to his father James, then to Elisha Chew out of New Jersey. So they are part of the New Jersey branch which goes back to John Chew, Jamestown, Va., 1622.
The entire line from James, f/o Siddons, is traced back to Jamestown in my book "Genealogy of the Chew Family" by Robert L. Chew, 1982.