Her Royal Highness Princess Sai Savali Bhirom, Krom Phra Sutthasininat Piyamaharajpadiwarada, the chief consort of King Rama V, was born on September 4, 1862, with the original name Mom Chao Sai Ladavalya. She was the daughter of Prince Ladavalya, Krom Muen Phuminthraphakdi, the founder of the "Ladavalya" royal family of Ayutthaya (son of King Rama III and Chao Chom Manda Em Noi), and Mom Chin Ladavalya na Ayutthaya (later elevated to Chao Chom Manda Chin). She was affectionately called "Pao" within the family.

Mom Chao Sai Ladavalya resided at her father's palace upon her birth, under the care of Somdej Krom Phraya Sudarattanarajaprayoon. She had two elder sisters born to Chao Chom Manda Chin, who also served as chief consorts in the royal court. His Majesty King Chulalongkorn, along with his three consorts, were:

*Mom Chao Bua Ladavalya, when she became a queen, held the title of Her Royal Highness Princess Ubolratana Narinaak. Later, she was granted the title of Krom Khun Attaworarajkalya. Relatives and acquaintances referred to her as the eldest Queen Consort or simply the eldest.

*Mom Chao Piw Ladavalya, when she became a queen consort, held the title of Her Royal Highness Princess Saovapak Nariratana. Relatives and acquaintances referred to her as the middle Queen Consort or simply the middle.