Your missing link is: George Albert Brigham, b. 15 Nov 1847; m. 1 Nov 1877, Susan Moore of Petershham, MA; res. in Worcester. Ch.,b. there: 1- Fred Clarence, b. 15 Sep 1880; 2- Carrie Elizabeth, b. 3 Dec.1882; 3- Arthur E., b. 20 Oct 1887. These data are from pg. 391 of The History of the Brigham Family by W.I. Tyler Brigham, Grafton Press, New York 1907. More and later information on George is contained on pg. 150 of the The History of the Brigham Family, second volume, by Emma Elizabeth Brigham published by The Tuttle Company, Rutland, VT in 1927. Happy hunting from George in Virginia.