Queen Saovabha, one of the 4 wives of King Chulalongkorn (Rama V).
Queen Saovabha (Thai: สมเด็จพระนางเจ้า เสาวภาผ่องศรีพระบรมราชินีนาถ) was a half-sister and queen of King Chulalongkorn (Rama V) of Thailand, and mother of both King Vajiravudh (Rama VI) and King Prajadhipok (Rama VII). She was born as a princess by King Mongkut (Rama IV) and Princess Consort Piam. She was the youngest sister of Queen Sunandha Kumariratana and Queen Savang Vadhana. As a Thai royal tradition, King Vajiravudh renamed his mother to be Queen mother Si Patcharindra (Thai สมเด็จพระศรีพัชรินทราบรมราชชนนี พระพันปีหลวง).