Grant's academic research into First Nations genetic history and archaeology forstered his interest in DNA studies. He has done several speaking sessions for the Ontario Genealogical Society on genetics and at a number of archaeology and anthropology conferences. He has taken part-time courses at the Smithsonian and carried out mitochondrial DNA sampling at the Merriwether laboratory at Binghamton University.
Papers presented include:
Jean Baptiste Rousseau at Toronto (York), Swansea Historical Society, Toronto, Ont., Feb. 5, 2020
Early European Structures at Burlington Bay and the Lower Humber River: a Summary of Recent Findings, at the Ontario Archaeological Society Symposium, Toronto, Ont., Nov. 3, 2019
Archaic and Historic Population Clusters in Eastern North America, at 49th Algonquian Conference, Montreal, Oct. 28, 2017
Archaic and Woodland Population Clusters in Eastern North America, at Canadian Archaeological Association, Gatineau, Que. May 11, 2017
Exploring Historic and Prehistoric Milestones with DNA, North York Central Library, June 6, 2015
Traces of Middle Woodland Algonquian populations in southern Ontario with a special focus on Rice Lake, at the Ontario Archaeological Society Symposium, Peterborough, Ont., Oct.24-26, 2014
What Genealogical Questions Can Genetics Answer?, presented at the Ontario Genealogical Society's annual symposium, Hamilton Ontario, May 15, 2011
DNA Evidence for a Middle Woodland Algonquian Population: mtDNA analysis from the Donaldson Site, Ontario at the Annual Conference of the Canadian Association of Physical Anthropology (L'Association Canadienne D'Anthropologie Physique), Trent University, Peterborough, Ontario, Canada, 2006
mtDNA analysis of Archaic & Woodland Populations and its implications for Algonquian and Iroquoian Origins. Presented at the 36th Annual Conference of the Canadian Archaeological Association (Association canadienne d'archeologie), McMaster, Hamilton, Ontario, Canada, 2003
Grant has published books on the history of portages used by Indigenous people in The Legacy of Vanished Trails: the Archaeology, History, and Location of Portages in South-central Ontario and the Scugog Carrying Place: a frontier pathway about the history of the early colonial period in Durham Region between Lake Simcoe and Lake Ontario. He has also written a chapter on the "The Chemung Portage", in Peterborough Archaeology, 2015.
He has also written about "The Mississauga of Balsam Lake: A Genealogical Study of Forgotten Families in Old Victoria County" in Old Victoria County, 2017. Grant has published four books on Croatian and Italian genealogy and an online publication, the Croatian Genealogy newsletter.