Who was your great granmother "Brough"?I too have a great grandmother "Breau" (Brough, Brow, etc.) who was born in 1831 in Clinton County, NY to a "Peter Breau".Her name is Cornelia Esther Breau-Gordon.
I am having trouble finding information about my "Peter Breau" (b. 1800-1810 in Canada - d. ? abt 1840 in NY).