da hossman wrote:All this talk about Buckpasser and yet no one mentions the significance of La Troienne via Buckpasser in Speightstown, and La Troienne in the dams of Speightstown's progeny?
La Troienne's tail female descendancy has produced many excellent broodmares and several popular sires. Ergo multiples of her are pretty common in back pedigree of the contemporary TB population. Those multiples almost certainly aren't hurting Speightstown's progeny but many, maybe most, of his successful sons & daus. have much closer inbreeding/linebreeding that is probably more significant in terms of that success.
Given the gist of the original post there's a certain irony in the fact that Speightstown's nearest competition on the leading sire list is Kitten's Joy. His chief earner is Big Blue Kitten who has three crosses of Buckpasser but got none of his X chromosome.