Jerry Mahoney (umpire)
Michael Jeremiah "Jerry" Mahoney (December 19, 1860 – April 1, 1947) was a professional baseball umpire. Mahoney umpired 49 American Association games in , and he umpired 16 National League games the following year in , all of them as the lone umpire. References

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1860 births
1947 deaths
Baseball people from Massachusetts
Major League Baseball umpires
19th-century baseball umpires
Sportspeople from Lowell, Massachusetts