Who is Henry Tudor from The Constant Princess and what is their importance?

Henry Tudor was the King of England. He arranged the marriage of his son, Arthur, to Catalina. When Catalina arrives in England, Henry demands to see her, fearing that she was scarred in some way. He notes that he is instantly attracted to Catalina and that it's a shame that she would be handed off to his bumbling son's bed, but that at least he was to reap the benefit of her dowry. When Henry's wife, Elizabeth, dies in childbirth, he proposes marriage to Catalina, though to do so requires a dispensation from the church because she is his daughter-in-law. When she turns down the opportunity because she wants her own children on the throne, he is angry and announces the betrothal of Catalina to Harry but swears that the marriage will never happen.