Summerville's first election victory was as a
Toronto Board of Education trustee in 1920 and then elected as
Toronto City Council Ward 1 (Riverdale) alderman from 1922 to 1929. Summerville was elected to the
Toronto Board of Control in 1929. His election caused controversy when it was discovered he was on arrears on some of his municipal taxes, and was thus ineligible to run and to take his seat on the board. As a result, a by-election was called. Summerville, having paid his taxes, was allowed to run and he won the seat by a considerable margin. He stayed on the Board of Control for two years but lost his seat in 1930. He returned to council as Ward 1 alderman in 1935 and remained for two years until he was elected to the provincial legislature. In 1937 he was elected as the Conservative MPP for the riding of
Riverdale. He served until 1943 when he was defeated by
Leslie Wismer of the CCF. Summerville's son
Donald Summerville was elected to city council in 1955 for Ward 1 and was elected mayor in 1963, but died suddenly only months after his term in office. Donald's older brother William's grandson Paul Summerville was an NDP candidate in the 2006 federal election. ==References==