Which preposition to use with purbeck

before Occurrences 1%

I would fain wait till Elzevir was back, and fainer till this gale was spent, but it may not be; the nights are short, and I must be out of Purbeck before sunrise.

for Occurrences 1%

Sparing neither skill nor gold to make the great fortress worthy of his art, he sent to Purbeck for marble and to Caen for stone.

Which preposition to use with  purbeck