Field Marshal Chakrabongse Bhuvanath, the Prince of Bishnulok, was the 40th child of King Chulalongkorn and the fourth child of Queen Sri Bajarindra.

Saovabha Phongsri was an agnatic half-sister, royal wife and supreme chief queen of King Chulalongkorn of Thailand, and mother of both King Vajiravudh and King Prajadhipok. As in accordance with Thai royal tradition, King Vajiravudh later bestowed on his mother the title of "Queen Mother Sri Bajrindra".