He was the last American stallion to be the leading sire in North America for four consecutive years until Bold Ruler achieved the feat in 1965.

At the farm's yearling sale in May 1885, Hanover was sold to the Dwyer Brothers Stable for $1,250, where he joined Tremont, a very precocious two-year-old also born in 1884.

[2] After several losses at age four, and an obvious lameness to the right forefoot, Hanover was nerved and given the remainder of the year to recover.

His offspring include Hall of Fame inductee Hamburg, as well as David Garrick, Halma, Compute, The Commoner, Handspring, Half Time, and Yankee.

[3] Following the creation of the National Museum of Racing and Hall of Fame, Hanover was part of the first group of horses inducted in 1955.