EXHIBIT 99.1

PRESS RELEASE

December 29, 2004
Ithaca, Michigan

Scott E. Sheldon, Chairman of the Board of Directors of Commercial Bank, and
Howard D. Poindexter, Chairman of the Board of Commercial National Financial
Corporation, have announced the appointment of Richard S. Prestage to their
respective boards.

Dick has been the owner since 2002 of Schnepp Health Care Center, a 127 bed
skilled nursing home facility, located in St. Louis. He began his career at
Schnepp Health Care Center in 1978 and has managed the facility since 1986.

He is a life-long resident of Gratiot County, having attended St. Louis Public
Schools and Central Michigan University. He has served on the Health Care
Association of Michigan as a member of the Board of Directors for six years and
as a member of the Reimbursement Committee for fifteen years and as Past Chair
of the Reimbursement Committee.

Dick has served on the Mid Michigan Community Fire Department for 24 years as a
Firefighter, Officer, and Emergency Medical Technician. He is currently serving
his fourth three year term on the State of Michigan Fire Safety Board.

Dick and his wife of 25 years, Carol, have two children Courtney and Noah and
reside in St. Louis.