DUDLEY / GARMON / RICHARDSON 1800's NH

Looking for more info on Joseph Richardson DUDLEY (b. ca. 1825, Gilmanton, NH), and wife Hannah Ann GARMON.One known child, daughter Nellie Josephine DUDLEY (1855-1896), who married Austin Charles ABBOTT (1855-1934).

Joseph R. DUDLEY's parents were probably Nicholas Gilman DUDLEY and Shua RICHARDSON, but I need further evidence.Also, any further information on Hannah A. GARMON.

Thanks in advance,

Dr. Brian Kane