I read an interesting item about Bobby Darrin somewhere. In his last will and testament, apparently/supposedly he left a stipulation that his surviving son could not benefit from the estate until the age of 65.
"Noel [Coward] and I were in Paris once. Adjoining rooms, of course. One night, I felt mischievous, so I knocked on Noel's door, and he asked, 'Who is it?' I lowered my voice and said 'Hotel detective. Have you got a gentleman in your room?' He answered, 'Just a minute, I'll ask him.'" (Beatrice Lillie)