Dutch in Fife

Is there anyone with ancestors named Dutch who lived  in Leuchars and Ferry Port on Craig from 1700. I am having huge problems sorting the descendants into the right families as each family used the same names in each generation. One family went to Canada in 1826, one to New Zealand  and several to Australia from 1840-1870. The most common male names are George, William, Alexander and John, females Christian/Christina, Catherine, Mary, Elizabeth & Elspeth. There are a number of trees on Ancestry but they apparently have the same problem as me because they give conflicting information. Help please!