▁ 1 6 5 3 - 1 1 8 3 , ▁, ▁sid . ▁ 1 1 2 - 1 1 4 </ ref > ▁It ▁has ▁been ▁assumed ▁that ▁he ▁was ▁the ▁La ws pe aker ▁of ▁Ö ster g öt land , ▁though ▁this ▁is ▁not ▁documented . ▁He ▁married ▁the ▁noble w oman ▁In grid ▁Y l va , ▁of ▁possible ▁royal ▁descent , ▁and ▁father ed ▁several ▁sons ▁who ▁would ▁influence ▁early ▁Swedish ▁history , ▁most ▁not ably ▁Bir ger ▁Jar l . ▁He ▁is ▁mentioned ▁in ▁two ▁contemporary ▁diplom as ▁( DS ▁ 7 0 , ▁ 1 1 6 ), ▁as ▁the ▁brother ▁of ▁Bir ger ▁B ros a , ▁as ▁well ▁as ▁by ▁King ▁Magn us ▁Bir gers son , ▁who ▁in ▁a ▁letter ▁in ▁ 1 2 8 0 ▁called ▁him ▁" grand father ". ▁ ▁The ▁cogn omen ▁of ▁Magn us , ▁Latin ized ▁as ▁M ijn es ki old , ▁has ▁been ▁explained ▁in ▁various ▁ways . ▁It ▁could ▁derive ▁from ▁min ni ▁( memory ), ▁it ▁may ▁all ude ▁to ▁his ▁having ▁a ▁moon ▁( m å ne ) ▁on ▁his ▁shield , ▁or ▁it ▁could ▁be ▁interpreted ▁as ▁" small er ▁shield " ▁( m indre ▁sk öld ). ▁ ▁Magn us ▁Minn esk öld ▁was ▁probably ▁married ▁twice ; ▁this ▁has ▁been ▁infer red ▁from ▁the ▁great ▁differences ▁in ▁the ▁ages ▁of ▁his ▁children . ▁ ▁Nothing ▁is ▁known ▁about ▁his ▁supposed ▁first ▁wife . ▁Magn us ▁married ▁his ▁second