Two stallions, named Odin and Mazarin, had a large influence on the development of the Dole breed. Odin (son of Partisan), was a stallion of Thoroughbred (some sources say Norfolk Trotter) breeding, imported to Norway in 1834. Odin was said to cost £257 at the time and to have been bred to over 100 mares in his first four years in Norway. All Dole Trotter horses today contain Odin bloodlines. Mazarin was an Arabian imported to Norway in 1934. In 1849, another influential stallion was foaled, named Veikle Balder 4; he was a grandson of Odin and is considered the foundation stallion of the heavier Dole type. A stallion named Brimen 825 was used by breeders to maintain and improve some horses of the heavier Dole type for draft uses.