L'Petrie Province lies along the coast just east of Mirwell and Wayman Provinces. To the north and east the Kingway and Grandgent River splits it from Penburn Province. The River Road branches off southward along the Grandgent all the way to the port town of Corsa and the coast. As Selium is only two day's ride west of the Grandgent along the Kingway, it may be that Selium calls L'Petrie home as well.

After leaving his island home, Stevic G'ladheon moved his clan to Corsa along with his four sisters, making it, by far, the wealthiest of the provinces.

The current Lord is Nethan L'Petrie; the L'Petrie clan color is purple.