FIRST NATIONAL BANK CORP TO BUY BRANCH First National Bank Corp, the newly formed parent of First National Bank in Mount Clemens, Mich., and Bankers Fund Life Insurance Co, said it reached an agreement to buy a branch in Clinton Township from a nonrelated financial institution. It said the acquisition brings to 10 the number of bank branches in Macomb County. Terms were not disclosed. Separately, the newly formed holding company also said it named Arie Guldemond as chairman and Harold Allmacher as president and chief executive officer.