I originally wrote that my 2x great grandfather had two boys in his seventies. After obtaining his marriage certificate he married at age 68 and had my great grandfather at age 69 and his brother at age 71. Unfortunately there appears to be no record of my great grandfathers birth (or for that matter my 2x great grandfather) but my 2x great grandfather was 71 or 72 when the second son was born. While I did not get his death record he appears to have died at age 77.