Complex sentence: King Charles I (1600-1649) on horseback by King Charles II (1630-1685) in recognition of his support: that painting continues to hang in the family house in Trelowarren today.
Split into simpler sentences: King Charles I (1600-1649) on horseback by King Charles II (1630-1685) in recognition of his support. That painting continues to hang in the family house in Trelowarren today.