Robert (Bob) Blackett was Nancy and Peggy's father, married to Molly Blackett and therefore brother-in-law of James Turner. They were all friends as children (and together climbed the Matterhorn in 1901, which the Swallows and the Amazons call Kanchenjunga). Nancy assumed Bob must have rescued Molly and Captain Flint from Great Aunt Maria, who was their guardian at the time(SD28). Mrs Swainson says of the Walkers: who are the others .. they don’t look to me like Blacketts, nor yet like Turners implying that Bob Blackett was from a local family known to her (SD9).