Question about bequest of regalities

[Jinny Wallerstedt/Girl 57]

Hi, all. Quick question...Have been poking around about regalities but am not understanding the exact meaning in the context of a 1477 North Yorkshire will. The testator was a younger son of a gentry family. The will says,

"...Likewise I bequeath...21 regalities called Rallez..."

The legatee was the testator's nephew, who had become lord of the manor.

Is the testator giving 21 discrete territorial jurisdictions within his own county, and which had probably come to him from his father or other relative? From whom would the family have acquired these initially...were they a grant from the Crown, and were they held of the King directly or of someone else, or either?

Would these holdings likely show up among the lands, etc., of the lord of the manor when he died, or of his descendants (unless he'd disposed of them before then)?

Is "Rallez' a name by which the family referred to these jurisdictions (like "Mount Vernon,") or is this some other kind of descriptor?

Insight gratefully accepted. Thanks, Jinny