Elfrida

Elfrida Andrée (1841 – 1929), was a Swedish organist, composer, and conductor. A 1996 recording on the Caprice label features Andrée's piano quintet, along with a piano sonata, the string quartet in D minor, and vocal music. She was a sister of Swedish opera singer-soprano Fredrika Stenhammar.

Octavia Elfrida Saunders was a British academic and one of the first women to achieve a lectureship at the University of St Andrews where she lectured in German. Saunders published under the name O. Elfrida Saunders.

Chieftainess Elfrida Clagg is a character in Harry Potter books. She was a British witch and the Chieftainess of the Wizards' Council either in the fourteenth or seventeenth century. Either way, she was Burdock Muldoon's immediate successor of the post.