During the Edo period, the Hikone domain family became the top fudai daimyo family producing five Tairo (chief ministers) in six terms: Naozumi II, Naooki II, Naohide II, Naohide II, Naoaki II, and Naosuke II, among which Naomori assumed the position twice.
江戸時代の彦根藩家は井伊直澄、井伊直興、井伊直幸、井伊直亮、井伊直弼と5代6度（直該が2度。）の大老職を出すなど、譜代大名筆頭の家柄となる。