It was 1898 when a young banker named Edward Osler purchased the Cedars as a summer retreat for his family. Granddaughter Suzanne Mess grew up playing tennis on the lawns, bounding along the sandy beach and swimming in the waves. 'Our childhood here was rather marvellous,' says Ms. Mess. Many decades later, Ms. Mess is preparing to relinquish stewardship of the house that has remained in the family for 115 years.Steve Leach