Sir Osis is a thoroughbred horse born in Australia in 2006. Race horse Sir Osis is by Bold Expectation (AUS) out of Bold Brunette (AUS) , trained by David Blundell. Sir Osis form is available here. Owned by L A MANTON, R S OWEN, MRS M K OWEN, L A OWEN, MS D J M DAVIES, MRS I A MANTON & MRS T K GOKGUR..