A more thorough explanation:

A King's Proctor is a solicitor who represents the Crown in cases related to domestic relations, probate, and admiralty. When a queen reigns, the solicitor is called a Queen's Proctor.

For example, if a couple is seeking a divorce or nullity of marriage, the Queen's Proctor might intervene to prove collusion between the parties. This means that the solicitor would investigate whether the couple is working together to deceive the court and obtain a divorce or nullity of marriage.

Another example of when a King's Proctor might be involved is in an admiralty case. If a ship is involved in a legal dispute, the King's Proctor might represent the Crown's interests in the case.

Overall, the King's Proctor is an important legal figure who represents the Crown in various legal matters.