Be aware folks, the haplogroup prediction provided by a 37-marker STR test is thousands of years old - long before the advent of surnames. In other words, over a hundred million men would probably share it. Again, useful for ruling out matches, but not so much proving MRCA within a genealogically useful timeframe.
I currently have over a hundred FTDNA "matches" with a GD of 3 on Y37. Here are the surnames (including Wells, FWIW):
Adrain, Best, Bischoff, Boone, Brown, Burns, Byrne, Cook, Cooke, Coop, Daugherty, Davis, Dougherty, Downey, Downing, Evans, Flannery, Gaither, Gilmore, Gormley, Graham, Grant, Gray, Haggett, Higgins, Houston, Jackson, Kearney, Kelly, Kent, King, Lafarlett, Lawson, Madill, McAnally, McCairns, McCurdy, McDonnel, McHargue, McLaughlin, Meredith, Merryweather, Munnelly, Murphy, Neal, Quinn, Richards,,Robertson, Roddy, Rogers, Sherry, Slagle, Stevenson, Strain, Thomas, Wells, Wilson
The story changes when a genealogically useful test is taken. For a Y111 test, the list narrows down to 8 matches with GD of 5-7. All with Downing/Downen/Downey surnames.