The couple made their homes at Kensington Palace and at Highgrove House , near Tetbury . On 5 November 1981, the Princess's pregnancy was officially announced.  In January 1982—twelve weeks into the pregnancy—Diana fell down a staircase at Sandringham, and the royal gynaecologist Sir George Pinker was summoned from London. He found that although she had suffered severe bruising, the foetus was uninjured.  In the private Lindo Wing of St Mary's Hospital in Paddington, London , on 21 June 1982, under the care of Pinker,  the Princess gave birth to the couple's first son and heir, William Arthur Philip Louis .  Amidst some media criticism, she decided to take William, still a baby, on her first major tours of Australia and New Zealand, but the decision was popularly applauded. By her own admission, the Princess of Wales had not initially intended to take William until it was suggested by Malcolm Fraser , the Australian prime minister .