R. H. Ives Gammell (born 1893), American muralist, portrait painter, art teacher, and writer on art
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Bill Gammell (born 1952), Scottish sportsman and industrialist
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Stephen Gammell (born 1943), American illustrator of children's books
Bill Gammell was born in Edinburgh, and was the son of an investment banker, who was invited at an early age to join Edinbugh's Ivory & Sime (which was started in the late 1800s with the formation of the British Assets Trust.) Gammell attended Edinburgh's exclusive Fettes College where he was friends and debating partners with future British Prime Minister Tony Blair.
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The two families became friends, with George W. Bush spending the summer at the Gammell's farm in Scotland.