One Day at a Time aired from December 1975 to May 1984 and featured Bonnie Franklin as a divorced mom raising two teenage girls (Mackenzie Phillips, Valerie Bertinelli) in an apartment in Indianapolis. In 2012, Harrington made his final onscreen appearance, guest-starring as the manager of an apartment building on Bertinelli’s Hot in Cleveland. Read more http://www.tvfanatic.com/2016/01/pat-harrington-jr-dies-one-day-at-a-time-star-was-86/