Family lore always stated that it was four brothers (also John and William) that came from England together in about 1750's. One going on to, or staying in, Barbadoes and one going to North Carolina.
In the Colonial Soldiers of the South, 1732-1774, there is a listing for the Muster Roll of Captain Simon Herring's Company, Johnston County, North Carolina, October 7, 1755 which includes Gershom Wiggins and Gershom Wiggins Junior.
In 1772 William Ayler of Dobbs Co NC was security, with Gershom Wiggins, for the estate of John Ratcliff, administered by Joseph Ratcliff according to the County Letters of Administration.
There is a Gershom Wiggins listed in the 1780 North Carolina census for Dobbs Co, NC. He is also listed in the 1782 Tax lists there.