cannot be said at the moment need the manga to go on in order to know so
Very unlikely.
Sasuke Uchiha and Madara Uchiha
Fugaku and Mikoto Uchiha
Madara is by far the strongest. If Itachi was stronger he would've killed madara himself.
No
No, Madara Uchiha is the leader of the Uchiha Clan. Obito is merely a member and he is dead.
It has not been revealed in the Naruto manga or anime if Madara Uchiha dies.
He had at least five brothers. Four were killed in battle, when Madara was still a child. He also had a younger brother, Izuna Uchiha.
Uchiha Madara was a highly skilled ninja who lived years previously. He helped lead the Uchiha clan and was one of the founders of Konoha. He also trained Itachi. Madara helped Itachi with the Uchiha Clan Massacre.
No
Uchiha is his clan name. So yes all his family were Uchiha.
The author never revealed if Madara Uchiha married anyone.