When you say that you have no "close matches" - what is your definition of close matches and how many markers do you have tested ? Please state your Y-Search ID so that we can help you analyze your submission. I do not find your I2b1 under the ISOGG haplotree - what is your short name for your HG ?
If you join the Wilson Surname project at FTDNA or search Google for "Wilson DNA Project" you should find a lot of submissions to datamine for Wilsons. Very few upload GEDCOMs and unless your are an admin, you can only see GEDCOMs of those that are closely related according to FTDNA's tight definition of related. Most Surname DNA projects summarize the ancestry of most submissions but many do not submit this information to admins - specially older submissions and lower resolution submissions. You can also datamine even more submissions from Haplogroup and geographic and DNA fingerprint projects. Datamining is very tedious and Y-Search and surname project are your best bets to start with.