. ▁D és ir ée ▁is ▁said ▁to ▁have ▁chosen ▁Napoleon ▁to ▁be ▁Oscar ' s ▁god father . ▁ ▁Prince ▁of ▁Sweden ▁On ▁ 2 1 ▁August ▁ 1 8 1 0 , ▁Oscar ' s ▁father ▁was ▁elected ▁he ir - pres um pt ive ▁to ▁the ▁Swedish ▁throne ▁by ▁the ▁R ik sd ag ▁of ▁the ▁Est ates , ▁as ▁King ▁Charles ▁XIII ▁was ▁without ▁legit imate ▁he irs . ▁Two ▁months ▁later , ▁on ▁ 5 ▁November , ▁he ▁was ▁formally ▁adopted ▁by ▁the ▁king ▁under ▁the ▁name ▁of ▁" Char les ▁John "; ▁Oscar ▁was ▁then ▁created ▁a ▁Prince ▁of ▁Sweden ▁with ▁the ▁style ▁of ▁Royal ▁High ness , ▁and ▁further ▁accord ed ▁the ▁title ▁of ▁Duke ▁of ▁S öder man land . ▁Oscar ▁and ▁his ▁mother ▁moved ▁from ▁Paris ▁to ▁Stockholm ▁in ▁June ▁ 1 8 1 1 ; ▁while ▁Oscar ▁soon ▁acc limat ized ▁to ▁life ▁at ▁the ▁royal ▁court , ▁quickly ▁acqu iring ▁the ▁Swedish ▁language , ▁D és ir ée ▁had ▁difficulty ▁adjust ing ▁and ▁des pis ed ▁the ▁cold ▁weather . ▁Con sequently , ▁she ▁left ▁Sweden ▁in ▁the ▁summer ▁of ▁ 1 8 1 1 , ▁and ▁would ▁not ▁return ▁until ▁ 1 8 2 3 . ▁ ▁On ▁ 1 7 ▁January ▁ 1 8 1 6 , ▁Oscar ▁was ▁elected ▁an ▁honor ary ▁member ▁of ▁the ▁Royal ▁Swedish ▁Academy ▁of ▁Sciences , ▁and ▁in ▁ 1 8 1 8 ▁was ▁appointed ▁ch an cell or ▁of ▁U pp s ala