He attended the public schools and City College of New York.
[3] He was a personal friend of Tammany Boss Charles Francis Murphy, and was Treasurer of the Society of St. Tammany from 1902 to 1904.
Mayor George B. McClellan, Jr. appointed O'Donnel in January 1904 as President of the New York City Board of Taxes and Assessment.
[1] In May 1906, he traveled to Europe trying to improve his health.
He died on July 5, 1906, in his apartments at the St. George, at 223 East 17th Street, in Manhattan;[1] and was buried at the Woodlawn Cemetery in the Bronx.