Plutarch,
Plutarch's Lives — Galba
(1859)
“ Sulpicius Galba is owned by all to have been the richest private person that ever came to the imperial seat. And besides the additional honor of being of the family of the Servii, he valued himself more especially for his relationship to Catulus, the most eminent citizen of his time both for virtue and renown, however he may have voluntarily yielded to others as regards power and authority. Galba was also akin to Livia, the wife of Augustus, by whose interest he was preferred to the consulship by the emperor. ”
