land agent vs mayor of the palace

land agent

noun
  • A government official responsible for managing public lands. 

  • A professional employed to manage an estate; steward or estate manager. 

  • An employee of an oil or mining company who negotiates with landowners for rights to extract oil or minerals from their property. 

  • A real estate broker, especially one who specializes in the buying and selling of farms or undeveloped land. 

  • A person employed to manage the legal and practical aspects of developing a land grant. 

mayor of the palace

noun
  • In the Merovingian kingdoms, the king’s steward and, by the 7th century, de facto regent. 

How often have the words land agent and mayor of the palace occurred in a corpus of books? (source: Google Ngram Viewer )