The name can be Igbo and mean “father’s jewel,” being composed of the Igbo words ọla (jewel; precious thing) and nna (father). It appears as the name of one of the main characters in the Chimamanda Ngozi Adichie novel, Half of a Yellow Sun (2006).
It is also a Scandinavian feminine form of Ole. Other Scandinavian offshoots are Olanne & Oleanna.
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