Saovabha Phongsri was an agnatic half-sister, royal wife and queen consort of King Chulalongkorn of Thailand, and mother of both King Vajiravudh and King Prajadhipok. As in accordance with Thai royal

Prince Siriraj Kakudhabhand was the Prince of Siam. He was a member of the Siamese royal family and was the son of King Chulalongkorn and Queen Saovabha Phongsri.