Keeping the name Mana

I am marrying a convert who is not obliged to change his name as his name does not mean anything that goes against Islam, however my family has requested he still have a Muslim name for the family and Muslim community for introductory purposes, also in case he willingly would like to change his name. That being said, is he able to have the name Mana/Maana /Manha/Maanah as a Muslim name? I have seen this name online as acceptable names but it is referred for both girls and boys depending on spelling. Please confirm which spelling is acceptable Islamically for a boy and the meaning of it.