Here's the list of 56 Governors of NJ:
List of governors of New Jersey - Wikipedia
Longest-serving NJ Governors are William Livingston (FED), who served as the Garden State's 1st Governor from August 31st, 1776 to July 25th, 1790.
Arthur Harry Moore (D): 39th Governor from January 19th, 1926 to January 15th, 1929; January 19th, 1932 to January 3rd, 1935; January 18th, 1938 to January 21st, 1941.