Anachronism
You are stuck in a past time, unable to understand, or often even cope, with the products of later ages. While you may realize that society and technology have passed you by, you cannot help but expect things to be as they could be. You make plans expecting to walk or ride to Elysium. Phones and Computers are possessed entities, possibly the spawn of Satan (or some demon more appropriate to your time). You heat and light your haven with open flame, oil lamps, or whatever is most appropriate to your understanding of the world.
Perhaps you entered torpor and awoke in a world gone mad. Perhaps you simply ensconced yourself in a domain that did not share in the wonders and vulgarities of progress, so secure in your supernatural power that you never needed to look to the mortals for solutions to your problems.
Most often, you expect things to be as they were in the time of your mortality, but a rare few elders become stuck in some other time that might be considered their glory days. Some realize that they are stuck out of time, while others, particularly proud members of the high clans, insist that the world has become a corrupt, base thing. Either way, an Anachronism cannot be truly comfortable with servants and in surroundings that he cannot comprehend.
If you have ratings in knowledges like Science, Medicine or even Academics, these pertain to these sciences as they were known at the time you lost contact with history.
Diablerists may occasionally become stuck in their victim's lives, and become attached to a time that they never personally knew.