Ken Nelson

I used who wrong earlier. I fixed it upon advice. So then I decided to smarten up about who vs whom.  Fortunately, The University of Kansas is on the game:

The two sentences below illustrate the easy usage in which “who” is clearly the subject and “whom” is clearly the object. In such simple cases, virtually everyone can determine the proper choice: 

Who is that masked man? (subject)

The men, four of whom are ill, were indicted for fraud. (object)

See!

Note also that they suggest just re-writing to avoid who/whom:

It was Thomas Jefferson, I think, who was the third president of the United States.

to the “who/whom free”:

Thomas Jefferson was the third president of the United States.

I don’t believe this to mean the same – as the first sentence conveyed confusion. But you get the point.  If you don’t know for sure, don’t use who/whom.

Good tip! Who[m] do you think won’t follow it?