Lorraine

Lorraine was a magician before she settled down to raise a family. She's the great-grandmother of Frankie Greene and presumably the grandmother of Frankie's father Doc Greene and his sister (Frankie's aunt) Maura the Magnificent as Maura is the one who tells Frankie about Lorraine.

"More than Meets the Eye"
Lorraine intended to perform a trick going over Griffin Falls, however before she got the chance, she opted to give up performing in favor of settling down to raise a family. The trick barrels she intended to use were eventually passed down to Maura, who intended to perform the trick herself, prompting her to visit Griffin Rock.