Hucbert was a Frank

Franks

The Franks were a confederation of Germanic tribes first attested in the third century AD as living north and east of the Lower Rhine River. From the third to fifth centuries some Franks raided Roman territory while other Franks joined the Roman troops in Gaul. Only the Salian Franks formed a...

 and son of Boso the Elder

Boso the Elder

Boso the Elder was a Frank from the Bosonid dynasty. He was married to Engeltrude and died around 855. His family, the Bosonids were a dynasty of Franks that produced counts, dukes, abbots and bishops during the Carolingian Age...

. Therefore he was a Bosonid. His sister was Teutberga

Teutberga

Teutberga was a Frank and daughter of Boso the Elder. Therefore she was a Bosonid. She married Lothair II, a prince of the Carolingian dynasty, the imperial family of Francia...

, who married Lothair II, a prince of the Carolingian dynasty, the imperial family of Francia. Hucbert was lay-abbot of the Abbey of Saint Maurice-in-Valais.

Lothair's reign was chiefly occupied by his efforts to obtain a divorce from his wife Theutberga, and his relations with his uncles Charles the Bald

Charles the Bald

Charles the Bald , Holy Roman Emperor and King of West Francia , was the youngest son of the Emperor Louis the Pious by his second wife Judith.-Struggle against his brothers:He was born on 13 June 823 in Frankfurt, when his elder...

 and Louis the German

Louis the German

Louis the German , also known as Louis II or Louis the Bavarian, was a grandson of Charlemagne and the third son of the succeeding Frankish Emperor Louis the Pious and his first wife, Ermengarde of Hesbaye.He received the appellation 'Germanicus' shortly after his death in recognition of the fact...

were influenced by his desire to obtain their support for this endeavor. Lothair, whose desire for the divorce was prompted by his affection for a woman named Waldrada, put away Theutberga, but Hucbert took up arms on her behalf.