"Katy Daly" was written by Eamon O'Shea about real life Katherine Rose Daly and is deeply intertwined with the Wild West and Prohibition-era America. Katy's father, Bill Daly, a native of Roscrea, Co. Tipperary, Ireland, was running an illegal alcohol operation in Oakland, California where Katy was born in 1872. At some point the Daly family relocated to Tombstone, Arizona, to evade authorities.
After Bill's demise in a shootout with Wyatt Earp, Katy continued the family business eventually finding herself in Chicago manufacturing moonshine during Prohibition. Moving operations to San Francisco, Daly's involvement in a failed cross-border bootlegging scheme led her to receive 15 years in prison. She was the first and only female prisoner to be incarcerated at Alcatraz, where she reportedly succumbed to the rigors of prison life before her sentence was completed.