A report on people's ability to speak Welsh, which explores where they and their children have learnt to speak the language for April 2018 to March 2019.
Adroddiad ynghylch gallu pobl i siarad Cymraeg, sy'n archwilio ble wnaethant hwy a'u plant ei ddysgu ar gyfer Ebrill 2018 i Fawrth 2019.