source: Jennings achieved national prominence in the late 19th century, among his good horses was, 1887 Preakness Stakes winner Dunboyne, whom he bred, owned and trained.
target: Jennings achieved national prominence. It was in the late 19th century. Among his good horses was, 1887 Preakness Stakes winner Dunboyne. He bred, owned and trained Dunboyne.
references: Jennings achieved national prominence. It was in the late 19th century. Among his good horses was, 1887 Preakness Stakes winner Dunboyne. He bred, owned and trained Dunboyne.