[1] His was a notable golfing family, which included an elder brother, Bob Simpson, a Carnoustie-based club maker.

[4] On 28 April 1891, he married Isabella Leslie Low in Edinburgh at the Court House by warrant of Sheriff Substitute of the Lothian and Peebles.

His wife Isabella was born at Panmore Works Cottages, Barry, Carnoustie, on 21 July 1867.

He returned to the United States in 1922, where he designed the Vincennes Country Club course in Indiana, and became a professional member there.

He was undoubtedly a fine golfer but is primarily known for his club-making skills[5] and golf course architecture.