Looking for parents of Rhoda DUNBAR b. abt 1810 in either CT, RI or Palermo, Oswego Co NY, m. Alden MASON abt 1831, d. 1858; had son James I MASON, b. in Baldwinsville Onondaga Co NY 1848. What is earliest date for securing d. certificate copy? Any other help is appreciated. Sherry in IL