names I think are both strong and traditional:
Anne, Alice, Bethan, Christina, Caroline, Cassandra, Emma, Evelyn, Eleanor, Elizabeth, Esther, Florence, Fiona, Frances, Grace, Hannah, Harriet, Hope, Iris, Juliet, Josephine, Jocelyn, Jennifer, Katherine, Lauren, Margaret, Madeleine, Marianne, Megan, Nicole, Naomi, Nina, Paige, Rachel, Ruth, Rhiann, Rosemary, Scarlet, Stephanie, Sarah, Sorrell, Tamsin, Veronica