Hatoyama Ichirô was Prime Minister of Japan in the 1950s. He was a son of Speaker of the House Hatoyama Kazuo and father of Foreign Minister Hatoyama Iichirô. His grandsons Yukio and Kunio also served in top-level minister positions.
References
- Explanatory plaque at Hatoyama Kaikan, Bunkyô-ku, Tokyo.[1]