He was born at Cloyne to property owner William Chapman and Mary.
In 1840 he migrated to New South Wales, and on 11 December 1846 he married Catherine Shanahan, with whom he had four children.
A successful oil trader, he served on Sydney City Council from 1860 to 1862 and from 1866 to 1900; he was also a Glebe alderman from 1866 to 1875 and from 1878 to 1893, and mayor from 1882 to 1884.
In 1883 he was elected to the New South Wales Legislative Assembly as the member for Glebe.
This article about an Australian Free Trade Party politician is a stub.