Chao Phraya Sudharm Montri was Princess Piyamavadi Sri Bajarindra Mata's younger brother's son.

When she was 26 years old, King Rama VI has requested for her for marriage from her father, Pluem Sucharitakul and graciously Royal Wedding Ceremony at Phayathai Palace on 27 October 1921 and considered the first ordinary woman to attend the ceremony[1] She earned the noble title of Phra Sucharit Suda (Viscountess Sucharit Suda).

After the death of King Rama VI, the viscountess residing in Suan Sunandha Palace and then moved to Ban Phra Sucharit Suda at Rama 5 Road, after Vajiravudh College, which received the land from the king and still receive a number of inheritance.

She received grace from King Bhumibol Adulyadej and Queen Sirikit graciously bestowed royal expenses for sick time and residence in the area of the Crown Property in Soi Ton Son, Ploenchit Road, Bangkok.

Total age is 85 years, 3 months, 26 days and received a royal cremation at the crematorium in front of the Pavilion at Wat Debsirin on 29 March 1983.