Thomas W. Costello (born 1945), politician from Vermont in the United States
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Thomas Moore Costello (1883–?), lawyer, judge and political figure in Ontario
Thomas Jefferson | Elvis Costello | Thomas Edison | Thomas | Thomas Hardy | Thomas Mann | Thomas Aquinas | Clarence Thomas | Thomas Gainsborough | Dylan Thomas | Thomas Pynchon | St. Thomas | Saint Thomas, U.S. Virgin Islands | Thomas Carlyle | Thomas the Tank Engine | Thomas Moore | Thomas Cromwell | Thomas Becket | Abbott and Costello | Thomas the Apostle | Thomas Merton | Thomas Tallis | Thomas Paine | Roy Thomas | Thomas Telford | Thomas More | Thomas Wentworth, 1st Earl of Strafford | Ryan Thomas | C. Thomas Howell | Thomas Kean |
The formal dedication took place on October 3, 1999, with Syracuse Bishop James Moynihan reading the Papal bull and Auxiliary Bishop Thomas Costello acting as Celebrant.