How to use Roman names?
It’s not enough to choose a correct Roman name, you have to use it correctly as Romans did. You can find much interesting information on using Roman names and other forms of address in the article “Using Roman names”. An agnomen may refer to a victory over a particular enemy people (e.g. Britannicus, “victor over the Britons”) or in a particular place (e.g. Africanus, “victor in Africa”), a particular virtue (e.g. Pius, “dutiful”; Sapiens, “prudent”), or general preeminence (e.g. Magnus, “great”; Maximus, “very great”).