Aloysius (/ˌæloʊˈɪʃəs/ AL-oh-ISH-əs) is a given name.
It is a Latinisation of the names Alois, Louis, Lewis, Luis, Luigi, Ludwig, and other cognates (traditionally in Medieval Latin as Ludovicus or Chlodovechus), ultimately from Frankish *Hlūdawīg, from Proto-Germanic *Hlūdawīgą ("famous battle").
In the US, the name is rare, with fewer than 0.001% of babies receiving the name since the 1940s.
Most of those were Roman Catholics.
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