I have a copy of an affidavit dated 3 Jan 1906, signed by Marcus and Sally Chamberlain, testifying that my Gr. Grandmother Mary J. Chamberlain of South Dakota was indeed married to my Gr. Grandfather, Lucius Chamberlain.Marcus being a brother of Lucius. This affidavit was prepared to help my Gr. Greatgrandmother to continue the pension Gr. Grandfather Lucius had obtained after his service during the Civil War.This doccument obtained from NARA.
Any help, obituary, census report or tax rolls of Marcus and Sally will be greatly appreciated.