What made the Parton family vulnerable to attack was the political disruption among the nobility that took place during Henry's reign.
We can arrive at this answer through the following information:
The problems faced by the Parton family can be identified through the letters exchanged between the members of that family.
This family belonged to the gentry of Norfolk between 1422 and 1509.
Although they were very rich and possessed many poses, the civil war and the political break between the nobility during Henry's reign left this family in a fragile position, vulnerable to attack.
This happened because there was no kind of policy to protect them.
That's because this was a time when noble families were left unprotected and could be easily challenged and plundered. As such, family members should fight for their possessions, not just against thieves, but against people claiming eligibility as family member.
