And, Tairo (chief minister) was assumed by the Ii clan six times for five generations such as Naozumi II, Naomori II, Naohide II, Naoaki II and Naosuke II (there are arguments for and against the theory that Naomori assumed Tairo twice, and Naotaka assumed Tairo).
また、井伊直澄・井伊直該・井伊直幸・井伊直亮・井伊直弼と5代6度（直該が2度、直孝が大老になったかどうかは賛否両論である）の大老に就いた。