le if r , ▁Ó la fr ) ▁is ▁a ▁Sc and in av ian ▁given ▁name . ▁It ▁is ▁pres umably ▁of ▁Pro to - N or se ▁origin , ▁re construct ed ▁as ▁* An u - la ib az , ▁from ▁an u ▁" anc est or , ▁grand - father " ▁and ▁la ib az ▁" he ir lo om , ▁desc endant ". ▁Old ▁English ▁forms ▁are ▁att ested ▁as ▁ <0xC7> <0xA2> l ā f , ▁An l ā f . ▁The ▁corresponding ▁Old ▁Nov gor od ▁dialect ▁form ▁is ▁U leb . ▁A ▁later ▁English ▁form ▁of ▁the ▁name ▁is ▁O lave . ▁ ▁In ▁the ▁Norwegian ▁language , ▁O lav ▁and ▁O la f ▁are ▁equally ▁common , ▁but ▁O lav ▁is ▁tradition ally ▁used ▁when ▁referring ▁to ▁Norwegian ▁royal ty . ▁The ▁Swedish ▁form ▁is ▁O lov ▁or ▁O lo f . ▁It ▁was ▁borrow ed ▁into ▁Old ▁Irish ▁and ▁Sc ots ▁with ▁the ▁spell ings ▁Am la í b ▁and ▁Am h la o ib h , ▁giving ▁rise ▁to ▁modern ▁version ▁A ul ay ▁( see ▁also ▁Mac ▁Am h la o ib h ▁and ▁Mac ▁Am hal g ha id h ▁( I r ish ▁sept s )). ▁The ▁name ▁is ▁Latin ized ▁as ▁O laus . ▁ ▁Notable ▁people ▁ ▁North ▁German ic ▁Den mark ▁O la f ▁I ▁of ▁Den mark , ▁king ▁ 1 0 8 6 – 1 0 9 5 ▁O la f ▁II ▁of ▁Den