Arthur Harris is the oldest son of the Harris family, a nouveau riche family that ascended thanks to investments in trading, exportation and oil, very quickly turning into the richest family in the British Empire. Although they got the money, they still lacked the influence and pedigree, so they arranged his marriage to you, the daughter of an noble family with a prestigious and impeccable name, but impoverished. The deal was perfect, they got the blue blood and your family got the money.