From TLS:
When asked by a journalist which language he spoke at home, Prince Philip, who is of German-Danish-Russian descent and the nephew of King Constantine I of Greece, replied “What do you mean, ‘at home’?” Born ninety years ago on a kitchen table in Corfu, he went with his family into exile when he was a baby, after which his mother, Alice of Battenburg, who was deaf, was sent to an asylum, displaying what was assumed to be religious mania. His father, Andrea, then disappeared into a new life in Monte Carlo, his four elder sisters married German noblemen, and young Philip spent the rest of his childhood bundled between various European castles, in whose visitors’ books he would describe himself as “of no fixed abode”. His upbringing proved good training for Prince Consort, a job which has required him to have no fixed role, other than to keep two steps behind his wife and shake hands with strangers.
For a vagabond he sure has done well for himself.