Eric Church's Brother Suffered Multiple Seizures Before Death

Brandon Church, the brother of country star Eric Church, died after suffering multiple seizures ... TMZ has learned.

Brandon's father, Kenneth, tells us his son had a seizure at his home in Granite Falls, North Carolina Friday and was being transported to the hospital when he suffered another. The second episode appears to have sent Brandon into cardiac arrest.

Brandon, who had written a handful of songs over the years with his brother, had been having seizures in recent years, according to Ken.

A Scholarship Memorial Fund has been created in honor of Brandon and the family asks that donations to the fund be sent in lieu of flowers.

A law enforcement source tells us they believe the cause of death was natural, and no foul play is suspected.