First found in Lanarkshire, where they were officially seated from the year 1259 on the lands of Dalyell meaning "the beautiful meadow" on the banks of the River Clyde. They are descended from a Norman noble who entered England in 1066 and was granted lands in England but was invited north by King David of Scotland about the year 1150, who granted him the lands of Dalyell.

Some of the first settlers of this family name or some of its variants were: Andrew Dalyell who settled in Boston Mass. in 1764; George Dalzel settled in New York State in 1846; Jane Dalzel settled with her family in New Castle, Del. in 1789.

For more information on the last name Deell, the PDF Surname History is available for purchase as well as other products.