On a trip to Ellis Island back in 1998, I looked up the Furbert name in the Historical Research Center, and I was able to print out this information:
"The English family name Furbert is classified as being of occupational origin.It can be said that the most ancient and most interesting of surnames are those derived from the occupation of the original bearer.Occupational names have provided what has been described by scholars as 'an inventory of the common trades of medieval Europe.'Such names offer a glimpse into the daily lives of our ancestors.In this instance, the surname Furbert is derived from the Old French 'furbear, fourbear, forbear' meaning 'a furbisher of armour.'Thus the surname was originally applied to someone who was employed by an armourer to put the finishing touches to his work.
Variants of the surname Furbert include Furber, Forber, Furbisher, Furbusher, and Frobisher.One of the earliest written references to the surname in its various forms is a record of one Elfwin Furbor who appears in the Cartulary of Oseney Abbey, Oxfordshire in 1180.Research is of course ongoing and the name may have been recorded earlier than the date indicated above.
Later references to bearers of the surname include a record of one Roger le Furbur who was recorded in the Pipe Rolls of London in 1199 while Adam le Fourbour was mentioned in the Court Rolls of the Borough of Colchester in 1333.George, the son of John Furber was christened in Evercreech, Somerset in April 1605, while Margaret Furbert married James Bell in Broad Clyst, Devonshire, in May 1715.In the records of St. George's Church, Hanover Square, London, it is documented that John Furber married Anne Mihill in 1791 while Mary Ann Furbert married WIlliam Barnett in June 1826."