sentences:  The origins of this dynasty are unknown, but Humbert's ancestors are variously said to have come from Saxony, Burgundy or Provence.Given Humbert's close connections with Rudolf III of Burgundy, it is likely that his family was Burgundian, and was descended either from the dukes of Vienne, or from a Burgundian aristocratic family (such as the Guigonids, ancestors of the counts of Albon).It is also likely that Humbert was related to Ermengarde of Burgundy, second wife of Rudolf III.