YOU SAID:

The father of my father is your brother, the mayor

INTO JAPANESE

私の父の父はあなたの兄弟、市長です。

BACK INTO ENGLISH

My father's father is your brother, the Mayor.

INTO JAPANESE

私の父の父はあなたの兄弟、市長です。

BACK INTO ENGLISH

My father's father is your brother, the Mayor.