YOU SAID:

Despite his hard efforts his mom died

INTO JAPANESE

彼の努力にもかかわらず彼の母親が死亡しました。

BACK INTO ENGLISH

Despite his best efforts and his mother had died.

INTO JAPANESE

にもかかわらず、彼の努力と彼の母親が死亡しました。

BACK INTO ENGLISH

Despite his efforts and his mother has died.

INTO JAPANESE

にもかかわらず、彼の努力と彼の母親が死亡しました。

BACK INTO ENGLISH

Despite his efforts and his mother has died.