Roan Allen was born May 23, 1904, on the farm of James Brantley in Coffee County, Tennessee.

When Roan Allen was fully trained, he was competed successfully in Walking Horse, five-gaited, and harness classes in county fairs.

[3] Roan Allen was given the designation F-38 when the Tennessee Walking Horse Breeders' and Exhibitors' Association was formed in 1935, five years after his death.

It is estimated that 100% of living Tennessee Walking Horses trace their lineage back to Roan Allen.

One of his sons, Wilson's Allen, sired five of the early World Grand Champions, including Strolling Jim and Midnight Sun.