William Sammon was born 15 Jan 1902 in Mount St Patrick, Renfrew County, Ontario, Canada William was the youngest child of James Sammon and Margaret Gorman from founding families in the Upper Ottawa Valley. Sammon Road still exists in Admaston Township.
The Sammon's originally came to Canada in 1846, at the time of the Irish Famine. They came from from County Clare and work is still ongoing to find their original townland. The Sammon surname has sometimes been spelled Salmon, especially in the early Canadian records. The marriage records of James Sammon b. 1826 and his brother Joseph b. 1827, both give their father's name as John Salmon. Their mother's first name is clearly Margaret but neither record has a very readable last name for this woman who was William Thomas Sammon's Great-Grandmother. The best read of these files give Monoufue or Manniates, neither of which seems like a probable Irish surname. It is possible that her surname was Minogue - a Clare surname.
The O'Gormans were originally from Kilrush, County Clare and they left Ireland before the famine - in the late 1830's. Looking further back into William's tree, it appears that the Allen's were also from County Clare and the McGrath's appear to be from County Limerick.
William Sammon left Canada and came to the US in 1920 when he was 18. He joined the Marine Corps and served three years until 1923. He married Ellen Willis in Brooklyn on 5 May 1926. William worked at the Todd Shipyards in Brooklyn.
County Clare circa 1906. Blue area is believed to be the O'Gorman origin