Shamus Oh is a thoroughbred horse born in Australia in 2017. Race horse Shamus Oh is by Shamus Award (AUS) out of Essie's Pride (AUS) , trained by John Marzol. Shamus Oh form is available here. Owned by P F Marzol, R R Read, Mrs J J Read, J W Marzol, Mrs Y Balcomb, J N Roche, Mrs R J Sawczuk & Mrs A M Marzol.