A Brother's Warning
A Brother's Warning is a Document in the Rise of the Tomb Raider: 20 Year Celebration DLC Blood Ties. It belongs to the Atlas de Mornay set and consists of a letter written by Lara's uncle Atlas de Mornay, trying to break up the relationship between his sister Amelia and Richard, Lara's father.
The address on the letter is Lara Croft, 142 Abbingdon Road, Guildford, Surrey, England, AL9 5NQ. This address is of course fictional, there is no such road in Guildford. The zip code, though, is that of Hatfield House.
The news has reached Mother. She knows that you broke off your engagement with the Earl of Farringdon. She is beside herself with worry... but for the moment she's controlling the narrative. As fas as anyone knows, you're just having innocent second thoughts. But the moment your affair with Lord Croft goes public, it will be too late. Our name will be as ruined as this man you've chosen to bed!
Don't you see that you're being selfish, Amelia? Please consider your family. You're a De Mornay... everything you do has a great effect on us all.
I'm coming down to London soon. Don't do anything rash until we have a chance to talk.