 The name of the tribe normally follows the filiation and precedes any cognomina, suggesting that it occurred before the cognomen was recognized as a formal part of the Roman name; so probably no later than the second century BC.However, in both writing and inscriptions, the "tribus" is found with much less frequency than other parts of the name; so the custom of including it does not seem to have been deeply ingrained in Roman practice.As with the filiation, it was common to abbreviate the name of the tribe.