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In page Probus (emperor):

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Florian, the half-brother of Tacitus, also proclaimed himself emperor, and took control of Tacitus' army in Asia Minor, but was killed by his own soldiers after an indecisive campaign against Probus in the mountains of Cilicia.[1][2] In contrast to Florian, who ignored the wishes of the Senate, Probus referred his claim to Rome in a respectful dispatch. The Senate enthusiastically ratified his pretensions.[3] Probus next travelled west, defeating the Goths along the lower Danube in 277, and acquiring the title of Gothicus.[citation needed] However, the Goths came to respect his ability and implored a treaty with the empire.[4]