KOONTZ I'm looking for information on the Isaac "Jack" D. Koontz families in or around York, Nebraska. They are in the 1940 US Census as Jack Koontz b. 1888 age 52, Loretta Koontz age 50, Marjorie Koontz age 17 yrs, Virginia Koontz age 13 yrs. Jack Koontz's parents were George Koontz and Sarah Arnold. Isaac Jack D. Koontz and my grandfather, Lloyd Hunt Koontz, were brothers. I'd like to share information about this Koontz family and their descendants and ancestors.