Bona Sforza is a 4 year old mare by Written By out of the Snitzel mare, Thwayya.
Last start was 3rd at Riccarton Park on Nov 7, 2026 in the Windsor Park Stud Canterbury Breeders' Stakes (Gr.1) over 1400 metres.
Stakes performance:
1st
2026 NZB Insurance Stakes (LR);
2025 Riccarton Park Function Centre Welcome Stakes (LR);
2nd
2025 NZB Canterbury Belle Stakes (LR);
3rd
2026 Windsor Park Stud Canterbury Breeders' Stakes (Gr.3);
Sale Details

Lot 435 2023 MM Gold Coast National Weanling Sale
Vendor: Widden Stud, Widden Valley, NSW (As Agent)
Buyer: Highline Thoroughbreds/Catheryne Bruggeman/Paul Moroney Bloodstock $65,000

Lot 485 2024 NZB Karaka Book 1
Vendor: Highline Thoroughbreds
Buyer: Psd, Res $150,000
Written By (AUS)
Thwayya (AUS)
Written Tycoon (AUS)
Yau Chin (AUS)
Snitzel (AUS)
Miss Rainmaker (AUS)
Iglesia (AUS)
Party Miss (AUS)
Tobougg (IRE)
Tilla's Daughter (AUS)
Redoute's Choice (AUS)
Snippets' Lass (AUS)
Hurricane Sky (AUS)
Penniless (AUS)
Last Tycoon (IRE)
Kenmare (FR)
Barathea (IRE)
Umatilla (NZ)
Danehill (USA)
Snippets (AUS)
Star Watch (AUS)
Green Line Express (USA)