3. M.BaebiusTamphilus, brother of No. 2, was one of the triumviri for founding a colony in B. C. 194. He was praetor in B. C. 192, when he received Bruttii as his province, with two legions, and 1500 foot-soldiers and 500 horse of the allies. In consequence of the threatening war with Antiochus the Great, he was ordered to march with these troops to the neighbourhood of Brundisium and Tarentum, and soon afterwards to cross over with them to Epeirus. He remained in Greece the following year as propraetor, and took an active part in the war against Antiochus. In conjunction with Philip, king of Macedonia, he marched into Thessaly, and as Antiochus retreated before them, Tamphilus obtained possession of many important towns in Thessaly. The consul M'. Acilius Glabrio arrived soon afterwards, and took the command of the troops, but Tamphilus continued in Greece, serving under the consul. (Liv. 34.45, 35.10, 23, 24, 36.8, 10, 13, 14, 22.)

In B. C. 186, Tamphilus was one of the three ambassadors sent to settle the disputes between Eumenes and Philip and the Thessalian states. In B. C. 181 he was consul with P. Cornelius Cethegus. Both consuls received Liguria as their province, but they did not engage in any military operations. In the following year, however, when their command was prolonged till the arrival of the new consuls, they marched at the commencement of the spring into the territory of the Apuani Ligures, who, taken unawares, found themselves obliged to surrender. In order to prevent a renewal of the war, the consuls transported 40,000 of these people, with their wives and children, to Samnium. On account of this success, they triumphed on their return to Rome, being the first instance in which this honour had been conferred upon generals who had not carried on a war. (Liv. 39.23, 24, 40.18, 35, 37, 38.)