pɹˈɪns ɹˈæŋsɪt wʌz bˈɔːɹn æz ðə fˈɪfti sˈɛkənd tʃˈaɪld ʌv kˈɪŋ tʃˈuːlɐlˌɔŋkɔːɹn ænd ðə sˈɛkənd tʃˈaɪld ʌv kˈeɪoʊ tʃˈɑːm mˈændə mˈɑːm ɹˈɑːdʒɐwˌʌŋɡs nˈuːŋ ɡɹˈeɪtɡɹˈændɔːɾɚɹ ʌv kˈɪŋ ɹˈɑːmɚ ɹˌoʊmən tˈuː, ðə twˈɛnti sˈɛkənd wˈaɪf ʌv tʃˈuːlɐlˌɔŋkɔːɹn.
Prince Rangsit was born as the 52nd child of King Chulalongkorn and the second child of Chao Chom Manda Mom Rajawongse Nueng (great-granddaughter of King Rama II), the 22nd wife of Chulalongkorn.