Due to a small technicality, because I just noticed Lord Northam's age, I had to change things up in Jo's story. 
Since it would conflict and not make sense logically, especially since Lord Northam is the eldest at 32. 
She is now 29, instead of 32, met Morrie at 14, he will be two years older than her rather than seven, she'd have Nicholas at 24, making Morrie 31 if he were still alive this year, but he died a year ago so he most likely died at 30. So one year younger than his older brother. 
Story is still the same with them getting infatuated with each other and probably while they traveled they tried for a baby. Back then young girls were assumed fertile so it would be weird for Jo to not have conceived until 23, even if she was with Morrie since she was 14. Her story fortunately still makes sense. Though, the kicker is Morrie was simply someone who enjoyed infidelity and didn't cheat because she couldn't give him a child. He cheated because that's what made him feel more alive.