My Silas O. Briggs was listed on the 1870 Census of Union Twp, Nemaha County, Kansas. My Briggs family started in Rhpde Island and then my branch migrated West to Hancock Mass. and then Cary, son of Francis & Marberry Jones Briggs, migrated farther west to Otsego Co, NY where he married Deborah Hopkins and then proceeded West to Cohocton, Steuben County, NY where Silas O. Briggs was born. Silas entered the Civil War from Steuben Co, NY and after the War, he along with brothers, Seth D., Francis (Frank), and Valentine and a friend of theirs Frank Connor all went to Nemaha County, KS by 1870. I'm hoping yours connects somewhere along the line.