Whalebone
... that 1810 Derby winner Whalebone had a 16-year career as a stud, which ended with a fatal injury sustained while covering a mare?
... that 1810 <a href="./Epsom_Derby" id="mwBFA" rel="mw:WikiLink" title="Epsom Derby">Derby</a> winner <b id="mwBFE"><a href="./Whalebone_(horse)" id="mwBFI" rel="mw:WikiLink" title="Whalebone (horse)">Whalebone</a></b> had a 16-year career as a stud, which ended with a fatal injury sustained while <a href="./Horse_breeding#Live_cover" id="mwBFM" rel="mw:WikiLink" title="Horse breeding">covering a mare</a>?