The Sims family were early white settlers of what is now Hawkesville, Ontario. Members of the family are the descendants of Reverend James Sims was born ca.1812 in Insch, Aberdeenshire, Scotland. On June 1, 1836, he married the widow Janet Harvey Robertson and in 1837 came to what is now Canada with a large party of relatives: his father and mother, his wife and step-children Alexander, John and Jane Robertson, his brothers Peter and Andrew Sims, his sister Margaret, and nephews James and Peter Sims.

In 1838 the family settled as squatters on Queen's Bush land near Hawkesville in Wellesley Township. James and Margaret Sims had four children: Janet Sims, (1838-1926), James Campbell Sims (1842-1929), Peter Harvey Sims (1844-1920) and William Andrew Sims (1846-1930). James Sims died October 31, 1880. Both he and his descendants played an active role in the the educational, religious and commercial development of what is now the Region of Waterloo.