His Imperial Highness Prince Mikasa
- Name
- Lineage
- Fourth Son of Emperor Taisho
- Date of Birth
- The Personal Title for Young Members(Been conferred in accordance with the Imperial Family's tradition of appellation)
- Prince Sumi(Sumi-no-Miya)
- Coming of Age Ceremony
- 2 December 1935 (at the age of 20)
- Honorary Positions
- Honorary President of the Middle Eastern Culture Center in Japan
- Honorary President of the Japan - Turkey Society
- Honorary Vice-President of the Japanese Red Cross Society
- Education
- After studying at the Gakushuin Junior High School graduated from the Military Academy and served in the cavalry regiment.
- 1941 - Graduated from the Military Staff College and served as a staff officer
Her Imperial Highness Princess Mikasa
- Name
- Lineage
- Second Daughter of the late Masanari Takagi
- Date of Birth
- Honorary Positions
- Reserve Member of the Imperial House Council
- Honorary Vice-President of the Japanese Red Cross Society
- Education
- 1941 - Graduated from the Gakushuin Women's Academy
Marriage
- Imperial Consent
- Engagement Ceremony (Nosai no Gi)
- Marriage
Children
- First Daughter
- Her Imperial Highness Princess Yasuko
- Date of Birth: 26 April 1944
- Marriage: 18 December 1966 (Mrs. Tadateru Konoe)
- First Son
- His Imperial Highness Prince Tomohito
- Date of Birth: 5 January 1946
- Marriage: 7 November 1980
- Second Son
- His Imperial Highness Prince Katsura (Yoshihito)
- Date of Birth: 11 February 1948
- Second Daughter
- Her Imperial Highness Princess Masako
- Date of Birth: 23 October 1951
- Marriage: 14 October 1983 (Mrs. Soshitsu Sen)
- Third Son
- His Imperial Highness Prince Takamado (Norihito)
- Date of Birth: 29 December 1954
- Marriage: 6 December 1984
- Decease: 21 November 2002