In your research have you uncovered any connections between the Ruscoe/Rusco families of Hertford, Essex England and the Roscow families of Lanchashire England? It seem like in America some of the descendants of both these families have altered the spelling of their sur name to ROSCOE or Rosco. Also have you found any RASCOE's, Rascow's, RASCO's families in England? If so are there any connection with the Ruscoe's.
In upper New York and Vermont there are Rascoe's, Rasco's, Roscoe's, and Rosco's whose ancestry goes back into French Canada, especially in Quebeck. The French spelling seem to have been Racicot or Roscicot. Any connections???