births
Leroy Grumman, American engineer and businessman, co-founded Grumman Aeronautical Engineering Co. (died 1982)

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Leroy Grumman
American engineer and industrialist
Leroy Randle "Roy" Grumman was an American aeronautical engineer, test pilot, and industrialist. In 1929, he co-founded Grumman Aircraft Engineering Co., later renamed Grumman Aerospace Corporation, and now part of Northrop Grumman.Source: Wikipedia (CC BY-SA)
Grumman
1929–1994 aerospace manufacturer
The Grumman Aircraft Engineering Corporation, later Grumman Aerospace Corporation, was a 20th century American producer of military and civilian aircraft. Founded on December 6, 1929, by Leroy Grumman and his business partners, it merged in 1994 with Northrop Corporation to form…Source: Wikipedia (CC BY-SA)
January 4
Day of the year
January 4 is the fourth day of the year in the Gregorian calendar; 361 days remain until the end of the year.Source: Wikipedia (CC BY-SA)