Gibbs is new to the SCA, but had done some other medieval-themed activities under that name and wanted to find a registrable equivalent that fit with their late-period English persona and paid homage to a grandfather named Morris.
Gibbs appears to have originally been a pet name or diminutive version of “Gilbert” before becoming established as a distinct name of its own. Morris seems to be an Anglicized version of the French “Maurice.” Both names came to England with the Norman invasion.
We spent some time looking at alternate spellings: Gibbs and Gibbes are both historically attested as English or Lowland Scots names, as are Morris, Moryis, Moryss, and Morrys.
When my first search only turned up documentation of Gibbs as a surname, we thought we might use Morris as a first name, perhaps with the spelling “Moryis Gibbs,” but then reconsidered when multiple people said this made them think of Maurice Gibb, a singer with the Bee Gees.
After turning up some additional sources, Gibbs Moryss emerged as the favorite.
Gibbs is a sixteenth-century English male given name, sometimes spelled “Gibbes.”
“Gibbs Wills” was the name of a man married on October 9, 1619 in Kent, England (Family Search, batch number M01596-5).
“Gibbs Hicksome” was the name of a boy christened on January 18, 1628 in Kent, England (Family Search, batch number C03656-1).
Moryss is a sixteenth-century English surname, sometimes spelled “Morrys.”
“John Moryss” was the name of a boy christened on February 13, 1562 in Langton by Wragby, Lincoln, England (Family Search, batch number C02972-2).
“John Moryss” was also the name of a boy christened on March 26, 1629 in Hereford, England (Family Search, batch number C13862-1).