Name Oslaf Gender Masculine Usage Anglo-Saxon Pronounced Pron. /oːs.lɑːf/(Old English) Edit Status Status Meaning & History Derived from Old English os "god" and lāf "legacy, remains" (from laibō). This name was borne by a son of Æthelfrith, who was King of Bernicia from c. 593 until his death c. 616.