Mayflower passengers (8)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
pilgrims
(Other definitions for pilgrims that I've seen before include "They travel to sacred places as acts of religious devotion" , "Slim prig (anag.)" , "Travellers to sacred places" , "Travellers to holy places" , "crusaders" .)