Q:Sir Horace George Montagu Rumbold 9th Baronet GCB GCMG KCVO PC (5 February 1869 - 24 May 1941) was a British diplomat. A well-travelled diplomat learning Arabic Japanese and German he is best remembered for his role as British Ambassador to Berlin from 1928 to 1933 where he warned of the ambitions of Hitler and Nazi Germany. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Office Holder