Theudebald (in modern English, Theobald; in French, Thibaut or Théodebald; in German, Theudowald) (534 – 555), son of Theudebert I and Deuteria, was the king of Metz, Rheims, or Austrasia—as it is variously called—from 547 or 548 to 555.
He married Waldrada, daughter of the Lombard king Wacho[3] and his step-aunt, sister to his father's second wife, Wisigard.
Although King Theudebald refused to send aid, he allowed two of his subjects, the Alemanni chieftains Leutharis and Butilinus, to cross into Italy.
Theudebald apparently convoked the council because Nicetius, bishop of Trier, had begun excommunicating Frankish aristocrats who contracted marriages within the prohibited degree of consanguinity.
His realm passed finally outside of the family of Theuderic I and was united to the kingdoms of his granduncle Clotaire I, who would soon become king of all the Franks.