Lion-like or son of a lion
Leonitus is a rare variant of the Greek name Leonidas. It combines the Greek word 'leon' (lion) with a patronymic suffix, historically signifying strength and leadership. While Leonidas is the more common historical form, Leonitus offers a more Latinized ending.
Less common today
Leonitus isn't in the latest US Top 1000. It last peaked at #9,006 in 2008.
US births per 5-year period, 1990βpresent (SSA data).