Heir Apparent is a thoroughbred horse born in Australia in 2018. Race horse Heir Apparent is by Cable Bay (IRE) out of Brigite (AUS) , trained by John A Sprague. Heir Apparent form is available here. Owned by Mrs K L Sprague, D J Sprague, R D Tate, L D Sprague, G A Phillips, D A Harris, Mrs P M Harris, P A Bullock, J R Kelsey, C Redmond, T A Harris, Mrs H M Sawyer, S D Manton, Ms S A O'Keefe & Ms K Borham.