The cheapest and easiest, but also potentially inaccurate, way of doing it, is to go to pedigreequery, look him up, and click on "progeny" in the drop-down menu. However, PQ is entirely user-input data and may or may not be accurate. Services like Equibase will for a fee provide a progeny report, but again, this will only show if he sired any foals who were registered Thoroughbreds (ie the Jockey Club.) I don't believe they'd show anything crossbred.
Is he intact or dd you buy him intact? Do you have any reason to think he was ever bred?
His bloodlines were phenomenal and I know he was gelded late. He didn't have a great race career but D. Wayne Lukas was his trainer at one point. I got him after having a break off the track. I absolutely adore his personality and his jump is amazing. I was hoping to find any siblings or foals that would be off the track. Probably a long shot but if any realatives have his jump and personality I want one!
you could check past Reports of Mares Bred (www.jockeyclub.com) to see if he was reported having bred any mares. If he shows up on there, then you could purchase a progeny report to see who his babies were. Or let me know his name and I can look him up on JC and see if he has any reports of mares bred filed for previous years.
Yeah, there's nothing about his pedigree or race record that would have made him desirable for TB breeding. (Yes, he has a lot of 'fancy' names, but nothing rare or special--big names like Raise a Native are harder NOT to find.) He does have a half brother in the PNW, if you believe pedigreequery, who likes to jump. Had a reasonably successful older half-brother by Distinctive Pro and a half-sister by Spectacular Bid, which is an...interesting choice as Awareness is out of Lovingness, a Spectacular Bid mare, so she got bred to her own damsire. That's a tad close for my taste, but it WAS Spectacular Bid... Overall, no stakes winners from that dam unless there are more out of that mare than on PQ. Dam's dam hasn't produced anything outstanding, either. His own race record was mediocre, so most responsible sales breeders wouldn't be interested as his foals wouldn't have sold well. And his sire got sent to stand in Pennsylvania, which isn't where super-desirable stallions go, though there are bargains there.
Also there's a 2011 named Grey Pride, but she's a filly from Ontario by Mizzen Mast.
Given he's got a half-brother who likes to jump, and HE'S got a great jump, if he was intact after race retirement and sold to a sport home, maybe he got crossed on non-TB or unregistered TB sport mares. Without hunting down his non-racing connections, though, unless he's been approved as a warmblood of some sort I don't know how you'd track that.