Just found your post today. Incase you haven't rec'vd any info I thought I'd share this:
25Apr1910 Braintree, Norfolk Co, Mass census- John 1877 Scotland, Mary 1877 Scotland, Sarah 1904 Scotland, John 1901 Scotland, Frank 1908 Scotland, Mary, 1909 Mass. John immigrated in 1907 and Mary/children immigrated 1908.
07Jan1920 Weymouth, Norfolk Co, Mass census- John, Mary, Sarah, Francis, Mary, and son Alexander 1913 Mass.
15Apr1930 Weymouth, Norfolk Co, Mass census- John M, Mary J, Francis, Mary, Alexander
08Apr1940 Braintree, Norfolk Co, Mass census- Mary, Francis, Alexander, Julia (daughter-in-law) and Alexander (son of Alexander and Julia) 1939 Mass.
I am not related but thought I would help. Nannette