The metropolitans had peculiars within the dioceses of their comprovincials wherever they had residences or manors, and some whose origin is uncertain, e.g.
As to metropolitan peculiars, the metropolitan might give an appeal from the dean to his regular official principal.
When peculiars were abolished (vide infra) the dean of Arches disappeared, and his title, in the 19th century, was erroneously given to the official principal.
On peculiars in Spain cf.
Certain religious houses, however, had their own final tribunals and were " peculiars," exempt from any diocesan or patriarchal jurisdiction for at least all causes relating to Church property (ib.