YOU SAID:

the other brothers second cousin's third uncle was very strange

INTO JAPANESE

他の兄弟の従兄弟の3番目の叔父は非常に奇妙でした

BACK INTO ENGLISH

The third uncle of the other brother's cousin was very strange

INTO JAPANESE

他の兄弟のいとこの3番目の叔父は非常に奇妙でした

BACK INTO ENGLISH

The third uncle of the other brother's cousin was very strange