''Y Trydydd Peth'' (The Third Thing) is a 2009 Welsh-language novel written by

Siân Melangell Dafydd Siân Melangell Dafydd (born 28 April 1977) is a Welsh novelist, poet and translator. In 2009 she won the National Eisteddfod Literature Medal for her first novel, '' Y Trydydd Peth'' (The Third Thing, Gomer, 2009). For six years she worked as ...

. It concerns 90-year old George Owens, a natural swimmer with a deep love of water stemming from childhood, and a wish to understand the third ingredient that binds hydrogen and oxygen to create water. Learning from an ancient law-book that the river Dee is his by right of birth, he decides to assert his claims by swimming all the way down the river to its estuary at Cheshire.

References

{{Reflist Welsh novels