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