YOU SAID:
My brother Alexander is amazing
INTO JAPANESE
兄アレクサンドルは素晴らしい
BACK INTO ENGLISH
Brother Alexander the great
INTO JAPANESE
弟アレキサンダー大王
BACK INTO ENGLISH
His brother Alexander the great
INTO JAPANESE
彼の兄弟アレキサンダー大王
BACK INTO ENGLISH
His brother Alexander the great
That didn't even make that much sense in English.