I've yet to write a Canadian-themed post this year so that will be rectified by discussing the website Bytown.net. Opening the site, we are first greeting with a heading, outlining that it is "a digital history of Eastern Ontario and Western Quebec, Canada, including the cities of Ottawa and Hull / Gatineau, 1600 to 2014." It seems to be something of a Rootsweb type site with a lot of contributors proving all sorts of historical and genealogical information. The important thing, though, is that there is a lot of genealogical and historical information on this site about Irish immigrants and their descendants.
'Control+F' will definitely be your friend on Bytown.net. The first page is lengthy, but provides links to other pages on the site that go into more detail. Indeed, on that first page you will find three tables of settlers in the Ottawa area. A significant number of the entries have an Irish county of origin listed and the name of the people can be clicked for more information.
Access the site by clicking here.