If you are trying to exchange info or post a correction PLEASE post your primary source. What GA record has your Irby born 1803 as son of Benjamin Wynn and Elizabeth Dewberry? What record of the marriage of Irby born 1803 to Mary Atcheson is there?
I believe the 1850 US census has Irby Wynne married to Elizabeth Darden born 1801/1802 while the 1860 census record has him born 1797.
I certainly am not interested in playing a blame game on bad research.