YOU SAID:

an old man and his grand daughter came walking down the country road

INTO JAPANESE

老人とその孫娘が田舎道を歩いてきた

BACK INTO ENGLISH

An old man and his granddaughter were walking along a country road

INTO JAPANESE

老人とその孫娘が田舎道を歩いていた

BACK INTO ENGLISH

An old man and his granddaughter were walking along a country road