Complex sentence: Venerable Dhammananda (born Chatsumarn Kabilsingh) had previously been an author on Buddhism and was the first Thai woman to receive full ordination as a Theravada nun.
Split into simpler sentences: Venerable Dhammananda (born Chatsumarn Kabilsingh). Dhammananda is the first Thai woman to receive full ordination as a Theravada nun.