RELATIVE PRONOUNS and PREPOSITIONS
Both defining and non-defining relative clauses:
•can begin with whose (instead of his/her/their), when (for times) and where
(for places):
William, whose wife Jane was a famous beauty, had mine children.
Here they are in this picture from the year when the youngest was born.
This has been my family home, where we've lived for over four hundred years,
since the time of Edmund Claremont.
•can begin with whom (for people) as the object of a clause (this is mainly in
written English, and is increasingly rare):
His girlfriend, whom he neglected, became very depressed.
•usually have any prepositions at the end of the clause:
It's the one which he was captain of during a famous naval victory.
I had a friend I shared everything with.
Peter, who my father used to work with, has become a government minister.
•in formal English, sometimes have a preposition at the beginning of the
clause, followed by which (for things) or whom (for people):
It's the one of which he was captain during a famous naval victory.
I had a friend with whom I shared everything.
Peter, with whom my father used to work, has become a government minister.