Siobhan Williams is an English-Canadian actress. Her television debut was on CBC's Heartland (2010), where she played the high school rodeo champion Jamie Lewis. She is widely known for her role as Naomi Hatch (Bohannon's wife) on AMC's Hell on Wheels (2013). She also starred as Esme Black on ABC's Black Box (2014). She is also due to appear on A&E's first scripted drama UnREAL airing spring 2014 on Lifetime.