I know one Beatrice who has a twin called Hester.
I think Beatrice goes with:
Arabella, Aurelia, Cordelia, Clarissa, Cassandra, Carolina, Christina, Daphne, Dorothy, Dorothea, Eleanor, Emmeline, Eliza, Elizabeth, Florence, Frances, Georgiana, Gabriella, Henrietta, Harriet, Hermione, Isabella, Julia, Josephine, Louisa, Lucinda, Mary, Margaret, Miranda, Ophelia, Philippa, Rosemary, Sophia, Sylvia, Tabitha, Viola, Violet, Victoria