In 2003 he married Sarah Darwin, a great-great-granddaughter of the naturalist Charles Darwin; they have two sons Leo Erasmus Darwin Vogel (born 2003) and Josiah Algy Darwin Vogel (born 2005).
She has two older brothers; Robert George Darwin (born 1959) and the conservationist Chris Darwin (born 1961).
Charles Darwin | Darwin | Sarah Vaughan | Sarah Palin | Sarah Bernhardt | Sarah Brightman | Sarah Jessica Parker | Sarah, Duchess of York | Sarah McLachlan | Sarah Silverman | Sarah Michelle Gellar | Sarah | Sarah Harmer | Sarah Lawrence College | Sarah Polley | Sarah Kane | Erasmus Darwin | The Sarah Silverman Program | Sarah Slean | Terminator: The Sarah Connor Chronicles | Charles Darwin University | Sarah Siddons | Sarah Lennox, Duchess of Richmond and Lennox | Sarah Hughes | Sarah Geronimo | The Sarah Jane Adventures | Sarah Ferguson | Darwin, Falkland Islands | Sarah Jane Smith | Sarah Bolger |
Ambassadors for the charity include Janet Barber, Sir James Barlow, 4th Baronet, Angela Darwin, Sarah Darwin, Julian Fitter, Monty Halls, Randal Keynes, Dorothy Latsis, Godfrey Merlen, Henry Nicholls, Nigel Sitwell, Antje Steinfurth, Jennifer Stone and Ian Swingland.
Of these, Sir James, Sarah Darwin and Keynes are descended from Charles Darwin - Angela Darwin is a Darwin by marriage (she is the widow of George Pember Darwin, son of Charles Galton Darwin).