Sundowner Sirius
- Sire: Horningsea Tigers Eye
- Dam: Sundowner Mizar
- Date of Birth: 1970-3-21
- Country: United Kingdom
- Mrs Jean E Day, United Kingdom
- Sundowner
- Mrs J Heaton, United Kingdom
- Merrimark
Health Information
- Transfer: Mrs J Finn
Mrs J Heaton (UK - Merrimark) - BRS 7/76