Which family owns the most banks in the world?

Bank Iowa 4 bank of america checking account 18 Bank of Milton 7 Citizens Bank of America 7 Citizens Bank of the Midwest 2 community bank 11 Community Savings Bank 13 ESQUIRE Bank National Association 17 FARMERS National Association National Bank 10 First American Bank 1 First National Bank in DeRidder 5 First National Bank of Ava 1 First Port City Bank 11 Hodge Bank & Trust 3 ORIGIN Bank 16 SECURITY Bank 14 Smackover State Bank 6 Tri-County Bank 4 Valley Bank of Ronan 3 Walters Bank & Trust 5