What is "theobule"

In Greek mythology, the name Theobule ( from + ‘divine will’ or ‘divine counsel’) refers to:

• Mother of Myrtilus by Hermes.
• Mother of Arcesilaus and Prothoenor by Areilycus.

This name was also thought to have given rise to Sibyl by Varro, a Roman man of letters. The historian Jerome similarly explained Theobule as the Attic form of the Doric (Siobolla), a variant of Sibulla (Sibyl in Greek)