By marie.bond@iliffepublishing.co.uk (Marie Bond) A young fundraiser has paid a visit to a new housing estate after its developer donated £100 to his sponsored double marathon. Six-year-old William Butler, from Swayfield, cycled 26 miles and ran 26 miles in the summer holidays to raise money for the Lincs and Notts Air Ambulance. In thanks for the donation from Allison Homes, William went to meet some of the team at its The Orchards development in Corby Glen and show off his bike. His mum, Rebecca D’Arcy, said: “William raised £700 in total for the challenge he completed, both his running and …