What key details about bernard ii , duke of saxony can be extracted from the following bio? Bio: bernard ii -lrb- c. 995 -- 29 june 1059 -rrb- was the duke of saxony -lrb- 1011 -- 1059 -rrb- , the third of the billung dynasty , a son of bernard i and hildegard . he had the rights of a count in frisia . bernard expanded the powers of the duke in saxony and is regarded as the greatest of the billungers . he was originally a supporter of emperor henry ii and he accompanied him into poland and negotiated the treaty of bautzen of 1018 . in 1019 -- 1020 , he revolted and gained the recognition of the tribal laws of saxony , something his father had just failed to do . he returned then to war with the slavs -lrb- obodrites and lutici -rrb- and drew them into his sphere of power and influence through their leader , godescalc -lrb- gottschalk -rrb- . he supported conrad ii in 1024 and his son henry iii , though he began to fear the latter for his closeness to the archbishop adalbert of bremen , an inveterate enemy of the dukes of saxony . though he was a critical ally of the danes , so fundamental to henry 's wars in the low countries , bernard was on the brink of rebellion until the death of adalbert . the remainder of his reign , however , was quiet . in 1045 , he erected the alsterburg in hamburg . he died in 1059 and was succeeded without incident by his son ordulf . he is buried in the church of saint michael in luneburg .
A:
- title is duke of saxony- reign is 1011 -- 1059- successor is ordulf- mother is hildegard- predecessor is bernard i- spouse is eilika of schweinfurt- death date is 29 june 1059- father is bernard i , duke of saxony- birth date is 995- name is bernard ii- image is bernhardiisachsen -lrb- cropped -rrb- . jpg