Which Flemish Baroque painter is known for his large equestrian portrait of Charles I?

Anthony van Dyck is the Flemish Baroque painter known for the large Equestrian Portrait of Charles I.

Van Dyck painted the work around 1637–1638, presenting Charles I on horseback in armor as a commanding, almost heroic monarch. The painting is more than a likeness: its scale, elevated viewpoint, baton, sword, and richly staged pose communicate royal authority. It is now held by the National Gallery in London.

Van Dyck became Charles I’s principal court painter after returning to England in 1632. He produced many portraits of the king and helped establish the elegant portrait style later associated with the English court. Rubens is the most tempting alternative because he was also Flemish and hugely influential, but the Charles I equestrian portrait named here is Van Dyck’s.