As to Poppaea, he was beforehand with Nero, and first seducing her himself, then, with the hope of Nero's favour, he prevailed with her to part with her husband, and brought her to his own house as his wife, and was not content afterwards to have a share in her, but grudged to have Nero for a claimant, Poppaea herself, they say, being rather pleased than otherwise with this jealousy; she sometimes excluded Nero, even when Otho was not present, either to prevent his getting tired with her, or, as some say, not liking the prospect of an imperial marriage, though willing enough to have the emperor as her lover. So that Otho ran the risk of his life, and strange it was he escaped, when Nero, for this very marriage, killed his wife and sister. But he was beholden to Seneca's friendship, by whose persuasions and entreaty Nero was prevailed with to despatch him as praetor into Lusitania, on the shores of the Ocean; where he behaved himself very agreeably and indulgently to those he had to govern, well knowing this command was but to colour and disguise his banishment.
When Galba revolted from Nero, Otho was the first governor of any of the provinces that came over to him, bringing all the gold and silver he possessed in the shape of cups and tables, to be coined into money, and also what servants he had fitly qualified to wait upon a prince. In all other points, too, he was faithful to him, and gave him sufficient proof that he was inferior to none in managing public business. And he so far ingratiated himself, that he rode in the same carriage with him during the whole journey, several days together. And in this journey and familiar companionship he won over Vinius also, both by his conversation and presents, but especially by conceding to him the first place securing the second, by his interest, for himself. And he had the advantage of him in avoiding all odium and jealousy, assisting all petitioners, without asking for any reward, and appearing courteous and of easy access towards all especially to the military men, for many of whom he obtained commands, some immediately from the emperor, others by Vinius's means, and by the assistance of the two favourite freedmen, Icelus and Asiaticus, these being the men in chief power in the court. As often as he entertained Galba, he gave the cohort on duty, in addition to their pay, a piece of gold for every man there, upon pretence of respect to the emperor, while really he undermined him, and stole away his popularity with the soldiers.
So Galba consulting about a successor, Vinius introduced Otho, yet not even this gratis, but upon promise that he would marry his daughter if Galba should make him his adopted son and successor to the empire. But Galba, in all his actions, showed clearly that he preferred the public good before his own private interest, not aiming so much to pleasure himself as to advantage the Romans by his selection. Indeed he does not seem to have been so much as inclined to make choice of Otho had it been but to inherit his own private fortune, knowing his extravagant and luxurious character, and that he was already plunged in debt five thousand myriads deep. So he listened to Vinius, and made no reply, but mildly suspended his determination. Only he appointed himself consul, and Vinius his colleague, and it was the general expectation that he would declare his successor at the beginning of the new year. And the soldiers desired nothing more than that Otho should be the person.