Joe Patterson who has resided in Canada since 1974, lost his thriving meat business after an industrial dispute with workers escalated into vicious sectarianism at the height of the troubles.
Mr Patterson claims that not a single law or justice agency came to his aid in the republic at the time, forcing him to relocate to Vancouver. He also alleges irregular practices by union officials, senior politicians, the police and law practitioners leading to the supposed 'burying' of his case.
"Northern Ireland unionist politicians turned their backs on Protestants south of the border in 1922. From 1922-1974 the Protestant population dropped from 20 per cent in 1922 to 2 per cent in 1974. From 1960-1973 37 Church of Ireland churches were closed.
"The refusal of Northern Ireland unionist politicians to expose the fate of the Republic of Ireland Protestants only guarantees the same fate for their own supporters in Northern Ireland," Joe Patterson said.
Trouble began at Joe's business when he sacked a man believed responsible for the theft of stock and cash from his business.
Next day a union backed strike began at the premises, lasted several weeks and eventually resulted in the closing of the meat plant.
Throughout, the strike was accompanied a campaign of intimidation against Joe and his family. This campaign included threatening notes and phone calls, some purporting to be from the IRA, who were well known to be heavily represented in Letterkenny in that era.
One note, amongst a raft of documentation relating to the case seen by the Sentinel, said a no-warning bomb would be left at the meat business. The IRA consistently denied any involvement.
Joe Patterson said: "Receiving death threats is not a pleasant experience. My wife had numerous phone calls intimating where she could pick up my body."
Despite a near 30 year campaign to highlight his fate, Mr Patterson says no one has yet been held to account and says he will never return to live in Ireland because he believes the Good Friday Agreement means nothing in the Republic.
Joe Patterson said that for many years he enjoyed good relations with the people of Donegal things changed at the start of the troubles.
"Many of our customers apologized to me they could no longer do business with us and we were forced to close in 1973.
"But we realised we were second class citizens.
"While every Irish man wants to see peace, I doubt it under the present circumstances. If some MP or TD asked 'What about Protestant civil rights south of the border?' What would happen?," Joe Patterson said.