Daughter of Joachim and Anna Thit Son Chum; she was baptized in Viengkhuk, Thaland in 1924, and her god-mother was the aunt of Sister Lúcia dos Santos. Joined the Congregation of the Lovers of the Cross in Siengvang, Laos, taking the name Agnes and making her final vows on 16 November 1928. Assigned as a school teacher in Songkhon, Thailand in 1932. Martyred in the anti–Christian persecutions that began when the French left Thailand.
- 1909 in Ban Nahi, Nong Khai, Thailand as Margaret Phila
- “Blessed Agnes Phila“. CatholicSaints.Info. 15 April 2015. Web. 3 June 2015. <>