https://www.pedigreequery.com/glorious+devon3

I'm new at this so please forgive me for posting this several times. It definitely wasn't my intention.. all suggestions are greatly appreciated. 

IMO TBs seem to cross well with Sun Frost when it comes to barrel horses. If I bred my TB mare my first pick would be some son of Frenchmans Guy.

Plans for baby?  Barrel racing I assume since you are asking about cow, but want to make sure.   But also curious if you are breeding to keep?

It's hard to know much about the mare, besides the Northern Dancer and a few other mentionables in the pedigree.   Her record is so-so based on starts and finishes.  She was vanned off, so I assume injury. Has she recovered enough to ride? Can she turn? Is she all run?  Is she real leggy type TB or is she more stout (John Henry style)? 

Those would be my questions before deciding on a stud.   I'd lean more foundation/cow bred if keeping and you want to put some turn or less free-runner in the foal.   But if she was one that was pushed on the racetrack in order to get her to run, you might see about something more running bred, TB or QH.  

If you are breeding simply to sell, I'd go with running bred TB. 

I am planning on keeping the baby for a future Barrel Horse.

she is sound and really isnt leggy like most thoroughbreds that I have seen. She looks more like a running bred QH to me.

I have a mare who is a grand daughter of Storm and a Half who is a son of Storm Cat. If I was to breed her I would want a cow horse all the way. My mare is 16.3 will weigh 1250 solid. For me, I would go with the cow lines just to improve her mind and cow sense. I don’t know about your mare, but mine is very sensitive, hot, and quirky. Which is very common with SC babies.

Sun Frost ????? Never heard of him.

Mine is also a Storm Cat, ~16.2, every bit of 1200lbs if not more and can definitely be described as sensitive and quirky lol As she's matured and seen the sights, she's not quite as bad, but she needs a lot of reassurance. She can get hot but usually comes right back down if you just redirect her attention. She prances for all of 30 seconds after a run and then walks. I found a gelding by her sire, and he was the exact same personality. Extremely athletic and fluid though, and she's more ratey than my cowbreds... Crossing her on a good minded, quiet stud would be a must.

I don't have any suggestions for a specific stallion, though would want to suggest that you look at any of the breeder's incentives you may be entering.  There are, of course, Future Fortunes, Pink Buckle, Blue Collar Breeders, Triple Crown etc, but also look at the Breeder's Futurities.  Up here in the midwest we have several breeder's futurities.  You can end up running for A LOT (over $150k) more money if you breed to one of the stallions that pays into those more local incentives.  Just a thought!

I get it, but I prefer that bloodline over FWF, etc. for a TB. Just giving OP a direction I would take myself. The success of Ryann Pedone's mare Star Zone on the FG, Dinero and Frenchmans Fabulous cross has also caught my attention and pulled me that direction.

I was joking which I think you caught, but you are correct---the Sun Frost line and Driftwood horses in general cross really well on TB blood.

I got it ;) just figured I'd explain my reasoning with a current cross out on the scene.

I've actually been on a Driftwood kick lately and saving a bunch of studs to my files (including a lovely palomino and bay!). I could get behind that cross on a TB as well!

Thank you everyone for all the suggestions. !!!

HHHMMMMM---wonder who those could be ??? LOL

Well my mare is a 2013, so this does give me hope for her quieting down as she grows older.  As quirky as she is, she runs very well and is quiet in and out of the arena. 

We have a daughter of Big Brown out of a Smoke Glacken mare that is roughly 16.1hh, has nice bone (not spindly like some TBs), and looks more like a running QH as well. She foaled a very nice, thick boned, level headed Hired Gun filly this past spring, and is currently in foal to Fiestas Gotta Gun (due in approx 28 days). Based on the looks and mind of her coming yearling filly, we have decided to breed her back to Hired Gun twice this spring after she foals.

Obviously I would say HG is my go-to pick for cowbred stallions (yes I am biased), however there was a gal who posted on here about not breeding him to a "hot mare" as he is pretty hot himself. Our TB mare is very relaxed, not hot at all, so for us the cross turned out wonderfully. I am a huge fan of the Playgun line, and there are multiple nice sons of his out there (Fiestas Gotta Gun, PG Heavily Armed, PG Dryfire, Guitar Gun, Seven from Heaven, to name a few).

As your mare sounds similar to ours, here are some of the other stallions we have contemplated breeding ours to:

Bullseye Bullion
Roller and A Shaker
Smart Boons

I would breed her with something that was already a mix of cow and run. There are a lot of barrel stallions that fit this model. Take your pick honestly. But then you are 3/4 run and about 1/4 cow. Sometimes when you breed straight cow to straight run, the significant differences in build can result in some weird genetic results. We did this with one of our calf roping mares. The colt ended up with her build and bone but he got her lower jaw and the stallion's upper jaw and spine and so he has parrot mouth and a lot of back problems (because his spine hasn't dealt as well with his wide foundation style body). He has had all kinds of trouble. A dash of cow instead of 50/50 might be better. If she were already all running QH, it might not be quite as much of a difference in body style as are TB run. People tend to think if they breed two horses that are so different they will end with a nice mix with the best middle ground of traits. But you can end up with a mish mash. I didn't make the mix on the cross we did either. My FIL did. And the result is not something I would wish on anyone.