Yes I had also seen the article on the new mill, and had considered the possibility that the Nicholas Flinn involved there could have been the one buried in Kilsharvan. I have also come across references to a document containing an 1806 indenture between Patrick McLoughlin, brewer of Drogheda and Patrick Kerwan and Nicholas Flinn, linen weavers of Drogheda, for a house on the south side of West Street. The Kilsharvan Nicholas was a carpenter, so this would suggest another Nicholas living around the same time. In the registers of St Peter's Drogheda there is also evidence of another Nicholas from the following baptism records:
Anne 1785 - Nicholas Flynn + Alice
Mary 1784 - Nich + Alice
Mary 1787 - Nich + Alice
which are too early to be children of the Kilsharvan Nicholas.