Duncan Macdonell, 14th of Glengarry, 4th Lord Macdonell had a son "Capt. Lewis Macdonell" who would have been born in the 1770's. I am looking for the origins of Lewis McDonald born 1709 in Inverness-shire and died 1777 in Bedford, Westchester county, New York. "William & Sarah Woolsey, executor and executrix of the will of John Woolsey, late of Bedford, Westchester Co., NY, deceased, Sold to Lewis McDonald of Bedford for 400 pounds, in the 28 year of George II - A certain tract … of land … within … Bedford in quantity two hundred and thirty one acres, it being the farm where John Woolsey died possest of in the New Purchase." The purchasing power of 400 pounds in 1755 is about 700,000 UK pounds in 2008.
Lewis McDonald was a Unionist and Anglican who emigrated to New York in 1730 and was a Colonel in the Continental militia at the time of his death. Can he be linked to Glengarry? I find very few instances of the Lewis forename for this period and I know Glengarry had ties of marriage to the Isle of Lewis.