Great-Grandmother (O.S.) is a fictional character portrayed by Suzanne Friedline in the TV series How I Met Your Mother.
They appear in 1 episodes out of a total of 208 aired
Episodes1
Last Time in New York
episode S9.E3 september 2013Barney and Robin try to have sex before the elderly wedding guests arrive, Ted reveals a list to Lily of things to do before he leaves New York, and Marshall has problems traveling through Packer Country.