 Born in 1746 at the family seat of Daldowie, on the right bank of the River Clyde as the youngest of one of seven surviving children and the youngest of three brothers, his elder brother John Bogle eventually had a plantation in Virginia.His other brother, Robert, after the failure of a business adventure in London (the importing house of ""Bogle and Scott""), established a cotton plantation in Grenada.Both these brothers were intimately involved in the slave trade.