Question: The Chief Mouser to the Cabinet Office is the title of the official resident cat, of the Prime Minister of the United Kingdom, which tabby cat, with this title, is owned by the former Chancellor of the Exchequer of the United Kingdom George Osborne and his family?
Sentence (from "Secretary to the Treasury"): The origins of the office are unclear, although it probably originated during Lord Burghley's tenure as Lord Treasurer in the 16th century.
Relevant evidence: No