 April the Fifth was a big, good-looking brown horse sired by Craig an Eran, the winner of the 1921 2000 Guineas and Eclipse Stakes, as well as the runner-up in that year's Epsom Derby, finishing second to Humorist by a neck.His grandsire Sunstar won the 2000 Guineas and Epsom Derby in 1911 before becoming a successful stud; apart from Craig an Eran, notable offspring included the 1917 Epsom Oaks Sunny Jane.His dam, Sold Again had an unfashionable pedigree, proved useless in a career as a racehorse on the flat and was given away free to her trainer who sold her for 20 guineas.