Well Marianne, from your link, I think somebody in the Middle Ages musta been kinda DRUNK when they slurred "Ludovicus or Chlodovechus" into Aloysius!
Also, I notice that Rooster's "Aloysius Pendergast" was not found on Wikip's list of notable people...however, JAMES AUGUSTINE ALOYSIUS JOYCE, is on that list...with his oh so notable Molly Bloom...