Did some Republican vote to impeach Wednesday and then change his vote? If so: who was that?

I found the endless and repetitive 'debate' a bore, so I was watching something else then flicking back once in a while to the channels that were showing the goings-on in the House. At one point, while voting on the first Article was still underway, I heard that there had been 1 "yes" vote from a Republican, the TV commentators weren't sure who. I later heard that there had been 0 such votes. So is it a safe conclusion someone changed his vote? And .... who? Thanks.