One of these days I need to get my head around how to deal with DNA matches from one of my GGFs (maternal grandmother's father). He came from a very intertwined lineage of Seventh Day Baptists. My grandmother always said his parents were unrelated, despite having the same surname before marriage, but I very much doubt that.
Anyway, that means my numbers are consistently too small for FTDNA's estimates of relationships. I don't have everything mapped out, but so far many of the matches with Coons &/or Burdicks in their lineage are no closer than 6th-8th cousins, but related via multiple paths, so FTDNA says "2nd-4th cousin."