Catherine Cecily O'Brien
(1893-1945) Australian Dominican Sister and educationist
About Catherine Cecily O'Brien
Lived 1893 – 1945 (aged 51). Catherine Cecily O'Brien was an Australian religious sister.
Catherine Cecily O'Brien OP (1893–1945) was an Australian Dominican sister and educationist who was known for her innovative teaching methods and for being an advocate of quality education for girls.
Biography Catherine was born near Merriwa, New South Wales, to James Thomas O'Brien and his wife Catherine Cecily, nee Gleeson.
While initially educated at home, Catherine received her senior education at the Dominican Convent in Maitland, where she won a teacher-training scholarship. Catherine entered the same Dominican Convent in July 1914, received the habit in April 1915 and took the religious name of Sister Mary Anselm. She took her perpetual vows in 1917 and taught at the local secondary school in Maitland until 1920.
Because of her desire to attend university, Sister Mary Anselm moved to Santa Sabina Dominican Convent School in Strathfield in 1921. She attended the University of Sydney, graduating in 1924 with a Bachelor of Arts with first-class honours in English and Latin and the university medal for English. She continued her education, completing a diploma in education in 1925. In 1928 she obtained a Master of Arts in English literature, with first-class honours, completing a thesis titled "Tragedy in English Literature". From 1925 until 1945, Sister Mary Anselm taught English, Christian doctrine, French and Latin at Santa Sabina. One of her students was Mary Barr Mackinlay who she encouraged to study English Literature. In time, Mary Barr Mackinlay would be a leading teacher known as Sister Alphonse Marie.
Legacy
Sister Mary Anselm became known for her innovative methods as well as her many lectures and publications on English literature and Christian doctrine. Sister Mary Anselm O'Brien died in 1945 and the library in the Aquinas Centre at Santa Sabina College is dedicated to her memory.
Selected works
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Important facts
People in Catherine Cecily O'Brien's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Catherine Cecily O'Brien's
Frequently asked questions
Who was Catherine Cecily O'Brien?
(1893-1945) Australian Dominican Sister and educationist
When was Catherine Cecily O'Brien born?
Catherine Cecily O'Brien was born on 25 October 1893 in Merriwa.
When did Catherine Cecily O'Brien die?
Catherine Cecily O'Brien died on 14 May 1945 in Moss Vale.
What was Catherine Cecily O'Brien's occupation?
Catherine Cecily O'Brien was a religious sister.
What nationality was Catherine Cecily O'Brien?
Catherine Cecily O'Brien was Australian.
Sources & further reading
· Wikipedia: Catherine Cecily O'Brien
· DBpedia: Catherine Cecily O'Brien
Cite this page
APA: Biography.guide. (2026). Catherine Cecily O'Brien. https://biography.guide/catherine-cecily-o-brien/
MLA: "Catherine Cecily O'Brien." Biography.guide, https://biography.guide/catherine-cecily-o-brien/.
Chicago: "Catherine Cecily O'Brien." Biography.guide. https://biography.guide/catherine-cecily-o-brien/.
Data last updated: 2026-09-22 · Spot an error? Report a correction.
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