Effie that causes writers to use it as a character name.

A long time ago there was a radio character called Effie Clinker. It was on before I was aware, but a neighbor always called me that as a nickname.

In the Hunger Games there is a character called Effie Trinket.

Tonight I was reading about Harry Potter's paternal grandparents. And here I go again.

While my name is not Euphemia, nor was I named because of any connection to Greek, Effie is the shortened form of that name.