Edna

Aunt Edna is an aunt of Leonard, Michael and Hayley Hofstadter. Leonard tells Sheldon and Leslie Winkle that Edna is one of the hairiest women they'd ever meet. He also mentions that she's a sweet lady and when she hugs him, he's tickled.

It is unknown if she's the aunt who made him the itchy sweater seen in "The Itchy Brain Simulation" (S7E8).