Re: Y-chromosome surname Ford/Lefort
From a large dictionary of family names I recently examined in Kortrijk (Courtrai) Belgium, it appears that there is little difference between Lefort and Lefors. I assume that as in the New World, Belgian spelling conventions only began to solidify around about 1700.
I have extensively looked at every Lefort and all Soundex equivalents in the IGI (LDS database) for possible ancestors in France, Swiss, Canadian and Walloon areas. Then and now there were very few if any possibilities for a direct connection to my Bradford Massachusetts patrilineal ancestor. However, there are (or were) a number of intriguing possibilities of Leforts who may have shared a common patrilineal ancestry but only through as yet undocumented connections to some common ancestral Lefort or Lefors. There are certainly some aristocratic Leforts (for example the Swiss military officer Franz Lefort, closest friend of Peter the Great)-- So some of us may have thepossibility of opening a "gateway" ancestry to medieval royalty through one of these elite Lefort families.
What were the given name or names (and dates of birth, marriage and death if available) of your early Lefors/Lefort males? I can quickly look to see if they correspond to any of the Lefort families in my notes.
Regardless, I would strongly recommend that you have your Y markers assessed through for example FamilyTree DNA. If for example, it were found that your markers corresponded to mine or to some other male with a Soundex Lefort equivalent, it would justify and motivate collaborative effort. And, on the other hand, since Lefort is a fairly frequent name in French speaking regions and had a simple descriptive derivation ("Strong"), the Y chromosome information could also eliminate a lot of false leads and wasted effort from the outset.