YOU SAID:

There once was an old man who lived in a tree

INTO JAPANESE

かつては木に住んでいた老人がいました

BACK INTO ENGLISH

There used to be an old man once living in a tree

INTO JAPANESE

以前は木に住んでいた老人がいました

BACK INTO ENGLISH

There used to be an old man who lived in a tree in the past

INTO JAPANESE

以前は木に住んでいた老人がいました

BACK INTO ENGLISH

There used to be an old man who lived in a tree in the past