"Ym mil naw pump pump roedd e'n byw yn y cefn gwlad."

Translation: In 1955 he was living in the country.

[Froggy_]

Is " . . . he lived in. . ." also correct?
If not, could somebody please explain why? (I get confused with the past tenses, and I'd be more likely to say "lived" rather than "was living" when speaking English)

[ibisc]

English usages - http://english.stackexchange.com/questions/19471/when-to-use-has-lived-vs-lived-vs-had-lived

Welsh (rough answer) - https://www.duolingo.com/comment/14105210

[Froggy_]

Thank you so much for the links - very helpful