It seems that Benjamin N Farrar is indeed a descendant of John Farrow and Sabrina Saratt.
Alas John Farrow was not a Farrar, certainly not a descendant of William Farrar of Va (1618) proved out by DNA where his descendant is not a match with descendants of William of Virginia. In fact one has to go back about 5,000 years or at least 2,500 years to find a common ancestor between the two.