An exhibition about the Protestant associations of Cavan, Donegal, and Monaghan will take place next weekend.
These were the former unionist associations that changed after partition, to focus on Protestant interests.
Dr. Samuel Beckon is the stakeholder manager for a cross-border and cross-community peace initiative.
In a letter he sent to Northern Sound FM, Dr. Beckton said that there has been a "lack of academic study" about the political history of the Protestant community in the border counties, following partition.
He claimed that "many Protestant unionists in the border region felt "betrayed" after the signing of the Anglo-Irish Treaty in 1922.
However, Dr. Beckton said that the community adapted to their new political environment.
The association is set to hold a series of exhibitions in the region to mark the "cultural and historic significance" of the community.
Speaking on the Joe Finnegan Show this morning, Dr. Beckton explained the role northern unionists could play in a united Ireland.
Dr. Beckton said: "In the event of a united Ireland, what would happen to northern unionism? If we look at the border counties for instance, unionism did not go away, these Protestant associations were proof of that.
"They still wanted their own TD to represent them, they wanted their own councillors to represent them, in both the county council and in some of the urban councils.
"This lasted for generations, not just the 10 or 20 years after partition. This lasted until nearly the start of the 21st century.
"The last recorded meeting for these associations was in Clones in 2016, during the centenary of the Easter Rising," Dr. Beckton added.
The event will take place at the Monaghan Peace Campus on Saturday, February 7th.
