Chaofa Princess Krom Luang Yothathep was the only daughter and only child of Narai[1]: 269  and Queen Kasattri, one of his concubines.

During her father's reign, she took over many duties about the palace when her mother died, such as caring for the ladies in-waiting and eunuchs.

After the death of Phetracha, Suriyenthrathibodi, the secret son of King Narai and Princess Kusavadi of Chiangmai adopted by King Phetracha, stole the throne of Ayutthaya from Prince Khwan, son of King Phetracha and Princess Sisuphan.

Princess Sudawadi and her son, Prince Tratnoi, moved out to live with her relatives.

She lived peacefully and died in 1735 during the reign of King Borommakot.