Lord __; Title for the Regent of a British Monarch

This page is the CodyCross answer for the clue below from Ancient Egypt, Group 191, Puzzle 4 (Shadow Clocks).

Question is: Lord __; Title for the Regent of a British Monarch

and the answer is: PROTECTOR

Word Meaning:

PROTECTOR — Someone who protects or guards, by assignment or on their own initiative.

Definitions from Wiktionary.