I think it should also be noted that Hart was a controversial historian of Irish history. Critics saw him as painting narratives of sectarianism and distorting evidence to support it.

Obviously people like to focus on before and after the revolutionary period but wasn't there already a pre-existing decline in the population to begin with? Is there a distinction made between protestants who's ancestors have lived on this island for centuries and British-born protestants who left as the British administration left? I had discussed this with a protestant friend before who had to hand some stats from a paper looking at West Cork where the migration of military and administrative personnel was a larger factor in protestant population decline than any other in that period.