Note 8 — Chapter I · 1684-1697. THE RAISING OF THE REGIMENT: AND THE WARS OF WILLIAM III.
Reading edition
Although the regular regiments were now numbered, it continued to be the fashion for many years to ignore their numbers and call them by the names of their colonels. At the risk of committing an anachronism, the author will at once adopt the modern system, and write of the regiment as the XVIIIth or the Royal Irish.