YOU SAID:
Grandma's mother's husband is my father's cousin
INTO JAPANESE
祖母の母の夫は父のいとこ
BACK INTO ENGLISH
Grandmother's mother's husband is father's cousin
INTO JAPANESE
祖母の母の夫は父のいとこ
BACK INTO ENGLISH
Grandmother's mother's husband is father's cousin
You've done this before, haven't you.