Katharine L. Morrill, Morrill Genealogies (Handwritten manuscript, 1903, New Hampshire Historical Society, Concord NH), 57.
Eastern Argus (Portland, ME), 28 November 1811, p. 3.
This is probably the Oliver that is shown on the 1790 census for Loudon, NH. This area would be a good place to look for wife and more children.
Cemetery Transcriptions from the NEHGS Manuscript Collections (Electronic database at www.nehgs.org).
Norton R. Bagley and Michael O. Vacca, Deaths in the Town of Boscawen, N.H. 1755-1864 (Concord, NH: Typewritten manuscript at the New Hampshire Historical Society, 1998).