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 in the late 19th century.  He bred, owned, and trained the 1887 Preakness Stakes winner Dunboyne.
references: Jennings achieved national prominence in the late 19th century.  He bred, owned, and trained the 1887 Preakness Stakes winner Dunboyne.