Question: Who is the maternal grandfather of George Mountbatten, 2Nd Marquess Of Milford Haven?
Sentence (from "George Mountbatten, 2nd Marquess of Milford Haven"): Captain George Louis Victor Henry Serge Mountbatten, 2nd Marquess of Milford Haven, (6 December 1892 – 8 April 1938), born Prince George of Battenberg, styled Earl of Medina between 1917 and 1921, was a Royal Navy officer and the elder son of Louis Mountbatten, 1st Marquess of Milford Haven
Relevant evidence: No