Eleanor Butler and Sarah Ponsonby met, fell in love, and eloped together in the late 1700s, before most of the world had the words to describe their affections. Mary Caryll, their housekeeper, confidante, bodyguard, and friend of nearly half a century, adds “narrator” to her repertoire as she guides a skeptical literature professor through the ladies’ lives, and the legacy of love they left behind even in death. "Ladies of Llangollen" is adapted from the letters, journals, poems, and papers of Eleanor, Sarah, and the friends they cherished.