Peter James Halas, 29, a teacher and coach at Point Pleasant, N.J., High School was released from jail Sunday on $100,000 bail, the New York Post reported Tuesday.
Specific details of what led to the charge were not immediately available, but a family friend told the Post: "I cannot believe he's accused of this; it just isn't fathomable."
Halas' great-grand uncle founded, owned and coached the Chicago Bears and helped create the National Football League.
James Halas also is the nephew of former Columbia University basketball coach Wally Halas, grandson of longtime Bears scout Pete Halas, and great-grandson of Walter Halas, a Notre Dame baseball and basketball coach who also served as a backfield coach for Knute Rockne.
Celebrity Families of 2014 [PHOTOS]