Conversation so far:
Where was David Attenborough born?
Attenborough was born in Isleworth, Middlesex (now part of west London), but grew up in College House on the campus of the University College, Leicester.
What did his father do for a living?
where his father, Frederick, was principal.
Did David have siblings?
He is the middle of three sons (his elder brother, Richard, became an actor and director and his younger brother, John, was an executive at Italian car manufacturer Alfa Romeo).

Question: Did his parents foster children?
Self-contained rewrite: Did David Attenborough's parents foster children?