Every Scottish schoolchild knows the story of St Margaret, who was this week named patron saint of the Scottish aid charity SCIAF as part of its 50th anniversary celebrations. Born in exile in Hungary, Margaret came to England when her father was mooted as a possible successor to the childless Edward the Confessor. When he was assassinated she fled to Northumbria; but a storm blew her ship north to what is now North Queensferry. Margaret later married Malcolm III of Scotland. Her guidance of SC