Winston Churchill

Winston Churchill was said to sleep 5 hours a night on average, but he did at least advocate a substantial daily nap on top of that modest allowance.
He would wake at 8, spend the morning in bed reading papers, dictating letters, etc., take a long nap at tea time, and work till as late as 3 am. He averaged 5-6 hours of sleep per day.
"You must sleep sometime between lunch and dinner, and no halfway measures. Take off your clothes and get into bed. That's what I always do. Don't think you will be doing less work because you sleep during the day. That's a foolish notion held by people who have no imaginations. You will be able to accomplish more. You get two days in one - well, at least one and a half."

~ Winston Churchill

His naps were 1.5 to 2 hours long, for a total of about 8 hours a day!
Winston Churchill had twin beds and when he couldn't fall asleep in one he changed to the other one.

Lifetime: 91