Augustine
Great, majestic, or venerable
Cassian
From the Roman family name Cassius, meaning 'hollow' or 'cup-shaped'.
Cornelius
Horned; one who is horned
Claude
From the Latin 'Claudius,' meaning 'lame' or 'crippled,' though this literal meaning is largely overshadowed by its noble associations.
Lorenzo
From Laurentum or 'man from Laurentum'
August
Great, venerable, majestic