Sir Barton was the FIRST horse ever to win the Triple Crown, at the 1919 Preakness Stakes.
The first horse to ever win the triple crown was Sir Barton. Sir Barton was born in 1916 at the breeding farm of Madden and Gooch in Kentucky.http://triple-crown-racing.suite101.com/article.cfm/sir_barton_won_first_triple_crown
It was Sir Barton. He was bred by John E. Madden in Kentucky.
Not the US Triple Crown. But he did win the UK Triple Crown.
Yes. War Cloud was the first to compete in all three races. But, Sir Barton was the first to win all three.
No. Secretariat is actually the 9th Triple Crown winner. He won it in 1973. It would be impossible that the other Triple Crown winners, such as Sir Barton, who was the first to win it all the back in 1919, could be related to Secretariat. In fact, Secretariat's successful foals were mostly fillies, and they became great broodmares. Secretariat has no Triple Crown winners in his pedigree.
Seabiscuit didn't win the Triple Crown
No, Northern Dancer didn't win the Triple Crown.
Secretariat was the largest horse to win the Triple Crown.
There is a filly that won the Triple Crown but it is the Filly Triple Crown also known as the Triple Tiara. The horse name is Ruffian. This horse is the first filly to win the Triple Crown.