Is there any connection between “machination” and Machiavelli?
Solution 1:
No, aside from the similarities in spelling, there there is no connection between machination and Machiavelli. Machination comes from the Latin root machinat-, which in turn came from the Greek mekhos: "contrivance". There is no convincing evidence to suggest that the name Machiavelli was derived from the word, or any of its roots or later derivatives.
Solution 2:
No: macchinazione, i.e. the act of macchinare, was already used before 1348 (G. Villani), and macchinagione in 1310. Source: DELI, Dizionario etimologico della lingua italiana.