I was wondering if there was a case in which "of whom" could be used where the prepositional phrase is taken off the end of the sentence and placed before whom.
For example something like:
This is John of whom Kim is taking care.
This sentence could be written as:
This is John whom Kim is taking care of.
which sounds more correct, but is the first example grammatically correct?
The first sentence is grammatically correct, but not natural. It is much more clear the second way, because "take care of" is understood as a phrase.