Hugh John Grant, the 88th mayor of New York City, served two terms from 1889 to 1892 and remains the city's youngest mayor, inaugurated at age 30. He was the second Roman Catholic mayor of New York City. Grant oversaw reforms like placing electrical wires underground, though he faced controversies, including allegations of corruption during his tenure as sheriff. Grant passed away in 1910, leaving a legacy marked by public service and controversy.