9 Will III c.1 (1697):
An Act for banishing all papists exercising any ecclesiastical jurisdiction and all regulars of the popish clergy...
Sec. 1. Whereas it is notoriously known, that the late rebellions in this kingdom have been promoted by popish bishops and other ecclesiastical persons of the popish religion, and forasmuch as the peace and publick safety of this kingdom is in danger by the great number of said the clergy now residing here, and settling in fraternities contrary to law, and to the great impoverishing of his Majesty's subjects who are forced to maintain them, and said the clergy do not only endeavour to withdraw his Majesty's subjects from their obedience, but do daily stir up and move sedition and rebellion , all popish archbishops, bishops, vicars-general, deans, jesuits, monks, friars, and all other regular popish clergy shall depart out of this kingdom before the 1st day of May, 1698, and if any of said ecclesiastical persons shall after that day be in this kingdom, they shall suffer imprisonment, and remain in prison until transported out of his Majesty's dominions, wherever his Majesty or the chief governors of this kingdom shall see fit, and if any person so transported shall return, he shall be guilty of high treason.
[The penalty for high treason was to be hung drawn and quartered].
9 Will III c.1 (1697):
An Act for banishing all papists exercising any ecclesiastical jurisdiction and all regulars of the popish clergy...
Sec. 4-5. Anyone who shall knowingly harbour such popish clergy shall for the first offence forfeit 20 pounds, for the second offence, double that sum, and for the third offence, shall forfeit all his lands during his life, and also his goods and chattels, one half to his Majesty, one half (not to exceed 100 pounds) to the informer.
Sounds like a reason to assume an alias to me...