Male form
- Nominative
- Seán Mac an Bhreithiún
- Genitive
- Sheáin Mhic an Bhreithiún
- Vocative
- a Sheáin Mhic an Bhreithiún
Wife form
- Nominative
- Síle Mhic an Bhreithiún
- Genitive
- Shíle Mhic an Bhreithiún
- Vocative
- a Shíle Mhic an Bhreithiún
Daughter form
- Nominative
- Síle Nic an Bhreithiún
- Genitive
- Shíle Nic an Bhreithiún
- Vocative
- a Shíle Nic an Bhreithiún
Male form
- Nominative
- Seán Mac an Bhreitheamhan
- Genitive
- Sheáin Mhic an Bhreitheamhan
- Vocative
- a Sheáin Mhic an Bhreitheamhan
Wife form
- Nominative
- Síle Mhic an Bhreitheamhan
- Genitive
- Shíle Mhic an Bhreitheamhan
- Vocative
- a Shíle Mhic an Bhreitheamhan
Daughter form
- Nominative
- Síle Nic an Bhreitheamhan
- Genitive
- Shíle Nic an Bhreitheamhan
- Vocative
- a Shíle Nic an Bhreitheamhan