NOTES ON SURNAMES (HULL) 1
ACUM I think that this name derives from the Yorkshire place name Acomb, near York. A William de Acom is listed in the Poll Tax rolls,1379, at “Hoton cum Angrom”. Angram is about six miles from Acomb.We also find an Adam de Acome acting as a witness in Beverley in 1380. The East Riding Muster Rolls of 1584 list a “George Ackam” at “Hullbanke parcell of Cottingham”. This is likely to be another spelling of Acomb. A family named Acam or Acom was resident in Hull in the 1690s. The spelling Acum is in Hull in 1849.
The meaning of the place name Acomb is “at the oaks” or “by the oaks”, from the Old English acum.