Keith, you are correct. My Allen T. Turpin was born around 1850, not 1827. He married an Esther M. (she may be Easter Melvino Hunicutt, but I have no proof, just speculation.) Easter Hunicutt's father was named Meredith Manson Hunicutt, and Allen T. and Esther named one of their sons William Manson Turpin.
Indeed, THOMAS DENNARD TURPIN'S parent's were Allen T.(born 1850, died after 1900) and Easter M. Turpin (born 1864, died after 1910), NOT Allen Pearson and Malinda Easter Green. Allen T.'s parents were William A. Turpin and Genetta "Jane" Wilbanks.
Thomas Dennard can be found in the 1900 Rabun County Census living with his parents and 5 siblings: William, Celia, Bennie, John Calvin (Johnny), and Jenovia (Sarah).
I can understand why some could get this couple (Allen P. and Easter) mixed up with the other Turpin couple since the names are similar, but the birth dates are clearly far enough apart to make a distinction.