Undated Bonhams handout photo taken by Cecil Beaton of (l-r) the Prince of Wales, Sister Rowe holding the Duke of York and the Princess Royal issued Friday January 6, 2006. Private letters from the Queen to her midwife are set to go under the hammer at auction later this month. The five hand-written letters, dating from 1959 to 1964, are addressed to Sister Helen Rowe, who was present at the births of all four of the Queen’s children. See PA story SALE Letters. PRESS ASSOCIATION photo. Photo credit should read: Bonhams/PA.