The surname originated as a patronym, however it no longer refers to the actual name of the bearer's father.

The form Nic Sitric is borne by unmarried females; the forms Bean Mhic Sitric and Mhic Shitric are borne by married females.

[1][2] These surnames originated as patronyms, however they no longer refer to the actual name of the bearer's father.

Mac Sitric has been Anglicised variously as MacKittrick, MacKitterick, MacKettrick, MacKetterick, MacKirtrick, Munkittrick, Munkettrick, Kittrick, Kitterick, and Setright.

[1] Anglicised forms of Mag Sitric include MacGetrick, MacGetterick.