Riverland Farm, est. 1993

For Sale
Competition Highlights


Wendy and Marty Costello, owners of Riverland Farm and ES Donavan, strive to breed, and assist others to breed, quality warmblood horses for sport and for pleasure that embody Donavan's kind and affectionate temperament, his natural talent and striking beauty, and are suitable for the amateur and professional rider alike.

Donavan's long, successful dressage career has demonstrated that he represents the best of the Hanoverian breed, and consequently, the desirable characteristics shared by all warmblood breeds.

Please enjoy our website and come back often.

With Donavan, something wonderful is always happening!

Wendy & Marty Costello
Fax: (262)243-5065

Riverland Farm
13700 N. Riverland Rd.
Mequon, WI 53097


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For webdesign visit

Wendy Costello, owner of Donavan reports:

Please go to New Website, click on Home to the left or go to www.ESDonavan.com,

and view our New Sale page.

This page is now incomplete.



Quaker's Noble Lad, aka Laddy, Morgan, All Around Family Horse and Schoolmaster; Western, and Dressage training; trail ridden; Must be seen and if possible , tried! Good Home a must! We have loved him!! Obviously we are busy with Donavan and the foals so Laddy needs a good home.
Contact Riverland Farm; 2262-243-9190; doubleyou@wi.rr.com


"Doha Day" ('03 filly)

Inspection site champion filly, '03.$12,000. Praised by German judge for her "light
and airy, uphill movement, the quality of the foals for the German elite auctions!"
Call Riverland Farm for details, 262-243-9190.




"Donnerschlag", bred by Carrie Nilles, owned by Wendy Costello, Riverland Farm.




  Donato by Donavan and out of Bedazzle by Bordeaux, is now for sale and Linda Bland is keeping Dartanyon ...

He earned very nice scores at the ISR/Oldenburg NA inspection: 7.9 for movement and 7.8 overall! It now appears he may stay bay!
Call Wendy Costello for details. 262-243-9190.



('01 Hanoverian filly)
USDFBC Site Champion Filly


"Donativo" '01 colt by Donavan! Gorgeous bay, 4 socks, thin blaze. Out of Amulette, Canadian Sporthorse Association mare by Adrian (Trakehner/TB lines). Will finish near 17 hands. Showing a lot of jumping talent as well as lovely movement. Ontario, Canada. Phone Maureen Lowrey, 705-329-1916.
Maureen and David Lowrey,
Lowrey's Highland Farm

"This guy is the most wonderful horse I have had the priviledge to own. He is smart, kind, generous, beautiful, jumps, and WOW can he move! Wish that I could keep him forever, even if it would be a complete waste of talent. He and I are great friends. I want to find a wonderful home for this wonderful guy. Give his dad a hug for me and tell him he's wonderful." Sold


"Dubé" '01 bay colt by Donavan! Out of Hanoverian mare, Donners Wonne, Main Mare book Hanoverian Mare, #1 at her Mare Peformance Test, by Donnerkeil, bred and owned by Kirsten Keene, Kaiser Stud, Ontario, Canada. Displaying wonderful, large movement. Will finish about 16.1 hands. Will be perfect for the smaller Dressage rider or a Pony Clubber. Price upon request.


Thorougbred, gelding, chestnut, 15 years, 17hh+. (Never on track.) Being brought back from non-work.
Good feet, straight legs, nice gaits, super mind, sweet expression, goes outside, on trails, and works in arena, currently putting on weight and more muscle, being tuned up at Wyngate Dressage Center, home of FEI dressage trainer Jessica Jo Tate in Walworth, WI. (Home of ES Donavan). Goes easily to x's, and will canter cross country alone or with other horses, no matter. Has been ridden bareback! Walks easily on the trailer! Perfect for Pony Clubber or Adult Amateur. Call Wendy, 262-243-9190. or doubleyou@wi.rr.com