Upon further review, your Uncle Edward Wells may have died at Anzio, Italy.
Our troops didn't break out of the bridgehead there until 23 May 44, and we know from the literature that the 1st A/D was at Anzio. The unit took some very heavy hits at Anzio, as did VI Corps, to which the division was attached from Jan-44. The Anzio campaign ran 22 Jan 44 / 24 May 44.
So, chances are that he died at Anzio, rather than during the Rome-Arno engagement.