jump through window near profaned capital to find a locked door! ???

[godinthemachine1]

hello im nearing yhorm the giant where you first start meeting the gargoyles and i just saw a message on a roof near where i had to kill a npc character, it said jump and then need friend. it was obviously indicating a window level with the roof but over a gap so you need to jump across which i managed despite suspecting a rude joke, but theres just a locked door up a small flight of steps, which keys do i need and where do i get them and also is that a giant rat i see sulking about past it???

[Jevmen]

is at the dungeon, in a room with 2 chests and some rats and basilisk, one of the chests is a mimic, is after the gigant crossing the stone bridge

[quacksouls]

You need the Old Cell Key. It's near the sleeping giant, within a chest. There are 2 chests. Beware of mimic and Basilisks.

[godinthemachine1]

ha ive just got old cell key while waiting for a reply, was just off to test it out. thx for replying... got to kill that giant too

[Mara Sov's Buttcheeks]

Its part of the Siegward from Catarina questline