Peter Gladstone British ornithologist (1928–2000) (1928–2000) Parents Charles Gladstone Isla Margaret Erskine Crum Children Tom Xenophon Gladstone Cleodie Selina Gladstone Allan Fergus Gladstone Siblings Sara Helen Gladstone Andrew Victor Gladstone Sir William Gladstone, 7th Baronet Penelope Anne Gladstone James Francis Gladstone Partners Jean Loveday Roy