<P> Mag is often used instead of Mac before a vowel or (sometimes) the silent fh . The single female form of "Mag" is "Nig". Ua is an alternative form of Ó . </P> <P> Some names of Norman origin have the prefix Fitz, from Latin language filius "son", such as Fitzwilliam, Fitzgerald, and so forth . Other Norman surnames may have the prefix "de", such as de Búrca, de Paor, or de Róiste . </P> <Table> <Tr> <Th> Male </Th> <Th> Meaning </Th> <Th> Anglicised </Th> <Th> Daughter </Th> <Th> Wife </Th> <Th> Examples </Th> </Tr> <Tr> <Td> Mac </Td> <Td> son (of) </Td> <Td> Mc / Mac / M' </Td> <Td> Nic </Td> <Td> Mhic </Td> <Td> Seán Mac Mathúna, Máire Mhic Mhathúna (wife of Seán), Aoife Nic Mhathúna (daughter of Seán) </Td> </Tr> <Tr> <Td> Ó / Ua </Td> <Td> descendant of </Td> <Td> O' </Td> <Td> Ní </Td> <Td> Uí </Td> <Td> Pól Ó Murchú, Mairéad Uí Mhurchú (wife of Pól), Gráinne Ní Mhurchú (daughter of Pól) </Td> </Tr> </Table> <Tr> <Th> Male </Th> <Th> Meaning </Th> <Th> Anglicised </Th> <Th> Daughter </Th> <Th> Wife </Th> <Th> Examples </Th> </Tr>

What does mc stand for in irish names