It could have been Clockwork, thanks, I'll check it out.
I found one while browsing Nexus called Molag Bal's Inferno that I finished a bit ago, which was alright. I also got one which adds daughter of Coldharbour as a race (which isn't that great to be honest imo - I thought the player character options could've been prettier xD )
Have WAY too much of an obsession with lore surrounding Molag Bal and Coldharbour etc. and I blame Serana