), ▁and ▁duch ess ▁of ▁Burg und y ▁( 9 7 1 / 5 - 9 8 6 / 9 1 ). ▁ ▁An c est ry ▁There ▁has ▁been ▁some ▁debate ▁about ▁Ger berga ’ s ▁ancest ry . ▁It ▁is ▁generally ▁thought ▁that ▁Ger berga ’ s ▁parents ▁were ▁Lam bert ▁of ▁Chal on ▁and ▁Ad ela ide , ▁daughter ▁of ▁Gilbert , ▁Duke ▁of ▁Burg und y , ▁and ▁wid ow ▁of ▁Robert ▁of ▁Verm ando is . ▁Yet , ▁because ▁Ger berga ’ s ▁son , ▁Otto - Will iam , ▁later ▁succeeded ▁to ▁the ▁county ▁of ▁M â con ▁( through ▁marriage ▁to ▁Er ment ru de ▁de ▁Rou cy , ▁the ▁wid ow ▁of ▁the ▁previous ▁count ), ▁some ▁sch ol ars ▁have ▁mistaken ly ▁argued ▁that ▁Ger berga ▁must ▁have ▁been ▁desc ended ▁from ▁the ▁counts ▁of ▁M â con ▁rather ▁than ▁from ▁Lam bert ▁of ▁Chal on . ▁ ▁Mar ri ages ▁Ger berga ’ s ▁first ▁husband ▁was ▁King ▁Ad al bert ▁of ▁Italy . ▁They ▁married ▁around ▁ 9 5 6 , ▁and ▁had ▁at ▁least ▁two ▁children ▁together , ▁Otto - Will iam ▁and ▁G is ela , ▁who ▁married ▁An sel m ▁I ▁of ▁Sav ona . ▁ ▁After ▁Ad al bert ' s ▁death ▁in ▁ 9 7 1 / 5 , ▁Ger berga ▁married ▁for ▁a ▁second ▁time , ▁to ▁Henry ▁I , ▁Duke ▁of ▁Burg und y , ▁the ▁younger ▁brother ▁of ▁King ▁Hugh ▁Cap et . ▁Ger