Question: Who is the maternal grandfather of George Mountbatten, 2Nd Marquess Of Milford Haven?
Sentence (from "Princess Victoria of Hesse and by Rhine"): Over her father's disapproval, she married his first cousin Prince Louis of Battenberg, an officer in the United Kingdom's Royal Navy, and lived most of her married life in various parts of Europe at her husband's naval posts and visiting her many royal relations.
Relevant evidence: No