Yet another possibility is that Cole is the Celtic deity Camulus, god of war. The old name of Colchester was Camulodunum, and the derivation sequence /kamul/ (+ lenition) > /kawul/ > /kaul/ > /ko:l/ is not impossible, especially among the Celtic languages. If Camulus is Cole, then Colchester (from the Latin for "Cole's fortress") and Camulodunum (from Brythonic Celtic for "the fortress of Camulus") are synonyms; it is likely that the Latin form is a calque on the Celtic.
Colchester contains an old Roman quarry that is called "King Cole's Kitchen". Geoffrey of Monmouth claims that Cole was the father of Saint Helena, mother of the Emperor Constantine. The word ceol means music in Gaelic, and this may be the origin of the rhyme about Cole and his fiddlers.
Some think that it is unlikely that the nursery rhyme was written before 1585, when Sir Walter Raleigh introduced tobacco into England. Others think that the "pipe" referred to may not have been a smoking pipe, but rather a musical instrument.
In the United States, King Coal is sometimes invoked as a metaphor for the centrality of coal mining in the economy of Appalachia, a role similar to that played by King Cotton in the Deep South