Disclaimer: all rights are as usual reserved to J. K. Rowling and Warner Bros. who helped direct the Harry Potter movies, and Casssandra Clare who wrote the Mortal Instruments, Infernal Devices, Dark Artifices, and the Bane Chronicles along with Freeform who currently is making the Shadowhunters tv show.
Jonathan Morgenstern' pov

I was currently in Little Whining, Surrey, in Great Britain to get a few people from the London Institute. But as I drove by number 4 Private Drive, I saw something that made me stop for a second or two. I felt a presence that is almost exactly like my own presence, except that it had a bit more purity and yet at the same time, there was something foreign, something magical and fey like i guess. I then felt a wave of pure unaltered hatred emanate from the house. I fleet a tug at my soul, and as I approached the house I felt my own soul reaching out towards whoever is giving off an aura of pure evil, yet at the same time good. I entered the house, and saw a boy no more than seventeen years old tied to a stake and fire was around his feet and was slowly but surely, making it's way up his jeans. When I saw him my nostrils flared, and for the first time in my entire seventeen years, felt like I was truly alive. I raced into action, pulling out my seraph blade Phaesphoros, I cut him done, and ran out of there after grabbing a trunk a pouch and a cloak from a cupboard and run with him in my arms as the house burnt down around us. I then hopped into my rental black Chevrolet Volkswagon car and drove like a bat out of hell towards Fleet Street to the location of Church of All-Hallow-the-Less (which the real church was located on Upper Thames Street and the institute is based off of St. Bride's Church which the Institute's spire is based off of). Once there, I tried to get inside, but couldn't thanks to a spirit, and so I was forced to turn around and go back to Edom. As I went towards a tree, a glowing shimmering golden portal opened in between two trees that showed Edom with black sand and a castle with a throne on the other side of the portal. It formed a shape of an old wrought iron gate from a castle. When I walked into the portal, I felt like I was weightless as I flew through the space time continum, which was black and white swirling around me with some fiery orange in it. When I got to my castle that is black with white cement to keep them together, I went and put the kid in a healing bath, after taking off all of his clothes and noticed a piece of paper that was sticking out of his pocket, which I took it out of, and it read.

Sammael Valentine Morgenstern (née Potter-Black)
Biological Father: Valentine Morgenstern, Magnus Bane, Azazel, Sammael, Gabriel, and Michael
Biological Mother: Jocelyn Morgenstern (née Fairchild) 
Adoptive Mother and Father: James and Lilly Potter
Powers and abilities: atmokinesis, power enegation, flight, spell casting, reality warping, dream walking, super strength an stamina, super senses, biokinesis, manifestation, soul channeling and absorption, chronokinesis, expert hand to hand fighter, empathy, supernatural perception, shape shifting, parseltongue, rune crafting, and dismantling wards, and telepathy (all blocked).
Lordships: Potter and Black
dead relatives: all except for Johnathan, Clary, and Jocelyn.
Soulmate: Jonathan Christopher Morgenstern
     Once I was done reading this, I realized that I need to help him learn his runes so that he can have some protection along with training in seraph blades. I also knew that I needed to have at least two dark shadowhunters as his body guards. I then watched as his body healed at a faster rate than most people and most downworlders. Except for me and angels along with warlocks and demons I realized suddenly. I went and sat by the room, and saw that he was almost completely healed on the outside. I then went and saw that his eyelids were wide open and . . . He had the most amazingly clear black eyes with green and yellow specks in them.

"What happened to ya my mate?" I asked my mate
A. N. And that's a wrap for this chapter.