I've got a Charles Wilcox b. February 16, 1729 in Middletown CT, d. after 1751. Married to a Luantha Elderkin (maybe Elderhin) on May 8, 1751 in Middletown. No children discovered as of yet. Son of Israel Wilcox (1680-1738) and Mary North (1695-1734), both of Middletown. Some conflicting information that Charle's mother may have been Hannah Sage (1694-1750), also of Middletown.
Given the proclivity of the Wilcoxes of Middletown to pass down family names during those generations, it may be that this Charles could be a father or uncle of your Charles.