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. Roan Allen sired 470 registered foals, including the foundation horses Mitch F-5, Sallie F-45, and Hiles Allen F-72. One of his sons, Wilson's Allen, sired five of the early World Grand Champions, including Strolling Jim and Midnight Sun.
