Esther Vanhomrigh or Van Homrigh, an Irish woman of Dutch descent, was a longtime lover and correspondent of Jonathan Swift. Swift's letters to her were published after her death. Her fictional name "Vanessa" was created by Swift by taking Van from her surname, Vanhomrigh, and adding Esse, the pet form of her first name, Esther.

George Berkeley – known as Bishop Berkeley – was an Anglo-Irish philosopher whose primary achievement was the advancement of a theory he called "immaterialism". This theory denies the existence of material substance and instead contends that familiar objects like tables and chairs are ideas perceived by the mind and, as a result, cannot exist without being perceived. Berkeley is also known for his critique of abstraction, an important premise in his argument for immaterialism.