Conversation so far:
What lead up to Bertrand Russell's early career?
Bertrand Russell was born into an influential and liberal family of the British aristocracy. Russell had two siblings: brother Frank (nearly seven years older), and sister Rachel (four years older)
Are there any other interesting aspects about the Bertrand Russell article?
Frank and Bertrand were placed in the care of their staunchly Victorian paternal grandparents, who lived at Pembroke Lodge in Richmond Park.
Why were Bertrand Russell and his brother, Frank, placed in the care of their grandparents at Pembroke Lodge in Richmond Park?
In June 1874 Russell's mother died of diphtheria, followed shortly by Rachel's death.

Question: Where was his father?
Self-contained rewrite: Where was Bertrand Russell's father?