Comment by magicalhippo

Leonard Cohen comes to mind as well[1]:

Cohen discovered that he had unknowingly paid a credit card bill of Lynch's for $75,000, and that most of the money in his accounts was gone, including money from his retirement accounts and charitable trust funds. This had begun as early as 1996, when Lynch started selling Cohen's music publishing rights, despite the fact that Cohen had no financial incentive to do so.

https://en.wikipedia.org/wiki/Leonard_Cohen#Lawsuits_and_fin...