Willam Henry Moore (October 19, 1872 – August 16, 1960) was a lawyer, author and Member of the Canadian House of Commons.
William Henry Moore was born in Stouffville, Markham Township, Ontario, on Oct 19 1872 to Rev. James Beach Moore and Hannah Elizabeth Greenwood. Moore was a direct descendant of Samuel Moore, an official in the 1670s in the American colony of East Jersey. He was also the great-great-grandson of Samuel Moore, a United Empire Loyalist and member of the Quaker movement, and the great-grand-nephew of three notable political leaders of the mid-1800s: Elias Moore, Reform M.P.P. during the Upper Canada Rebellion of 1837; Enoch Moore, who was convicted of high treason for his role in those same rebellions; and, Lindley Murray Moore, President of the Rochester N.Y. Anti-Slavery Society in 1838. He graduated in Arts at the University of Toronto in 1894 and went on to post graduate studies in Political Science. While studying at Cornell Law School, he was admitted into one of the Greek letter organizations (fraternities). He then went to Osgoode Hall to study law. He married Christine Mabel Bertram in Toronto June 23, 1898 (daughter of George Hope Bertram, MP for Toronto Center).
In 1903, Moore was appointed assistant to the President of the Toronto Railway Company.
In 1913, Moore built a large stone house on the east side of the mouth of the Rouge River in what is now Toronto. The property consisted of 175 acres that he had purchased from the original patentee, William Holmes. He called the estate Moorlands and it was kept in the family until the Metropolitan Toronto and Region Conservation Authority expropriated it in the 1960s. It was opened to the public as the Petticoat Creek Conservation Area in 1975.