Who are the main characters in a Wagner matinee by Willa Cather?

The main characters are Clark and his Aunt Georgiana.

Clark- a man living in Boston who was originally from a small farm in Nebraska with his Aunt Georgiana

Aunt Georgiana- a woman who was a teacher at Boston Conservatory, but gave up everything for love. She lived out the rest of her life in Nebraska in hardship and a life without music. She leaves to visit her nephew in Boston and her love for music is reawakened