When Sylvanus Hastings was born on 22 March 1721, in Hatfield, Hampshire, Massachusetts, United States, his father, John Hastings, was 31 and his mother, Hannah White, was 25. He married Jemimah Willard about 1745, in Groton, Middlesex, Massachusetts Bay Colony, British Colonial America. They were the parents of at least 6 sons and 5 daughters. He died on 12 January 1807, in Charlestown, Sullivan, New Hampshire, United States, at the age of 85, and was buried in Forest Hill Cemetery, Charlestown, Sullivan, New Hampshire, United States.
English and Scottish: habitational name from Hastings (Sussex), near which the English army was defeated by the Normans in 1066. The placename derives from an Old English personal name Hǣsta + the Old English groupname suffix -ingas. In the latter part of the 12th century, at the time of William the Lion, the surname was taken to Scotland, where it assimilated instances of the native Scottish surname Harestane.
English: variant of Hasting with Middle English genitival -s.
Irish: Anglicized form of Gaelic Ó hOistín ‘descendant of Oistín’, the Gaelic form of the personal name Augustine (see Austin ).