Ceylonese continued to volunteer and joined the British Army, RAF and the Royal Navy.
From the en.wikipedia.org
Ceylonese engineers joined the Ceylon Wireless Club and carried out radio experiments with Edward Harper.
From the en.wikipedia.org
Ceylonese Author Owen Cela is obviously no stranger to the refractions of cultural prejudice or to the vagaries of modern criminals.
From the time.com
More examples
Sri Lankan: of or relating to Sri Lanka (formerly Ceylon) or its people or culture; "Sri Lankan beaches"; "Sri Lankan forces fighting the Sinhalese rebels"
(ceylon) an island in the Indian Ocean off the southeastern coast of India
(ceylon) Sri Lanka: a republic on the island of Ceylon; became independent of the United Kingdom in 1948
(Ceylon (curry)) Ceylon is the name given to a family of curry recipes with the key ingredients being coconut, lemon, and a specific Ceylon curry powder, which classifies it as "hot" on most guides. Its name presumably originates from Ceylon, the former name of modern-day Sri Lanka.
(Ceylon) The old name for Sri Lanka, prior to 1972
(ceylon) teas made in Sri Lanka
(Ceylon) A type of glass bead finish, abbreviated Cy, that is shiny, pearl-like, and semi-transparent. Buy Czech Glass Ceylon Seed Beads
(Ceylon (Geography)) When the geographer looked at the grass in his yard, he exclaimed "I Ceylon!"