As a long servant to your family, noble or high-ranking people will recognize your origin. They might be willing to listen to you, if your family had any connections with them, but they also might be reluctant to trust you. As a servant to your family, whenever former or present, you are still seen through their reputation.
Additionally, your expertise and heritage is useful in the eyes of your potential employers. You should be able to find a job that involves your profession easier.
Due to the many years of servitude to your master, you have learned how to perform tasks that a servant could do, such as fetching things, cleaning, Mending, folding clothes, lighting fires, serving food, and pouring wine. Because of this it takes you half the time to learn Tool Proficiencies.
When you attempt to learn or recall a piece of lore, if you do not know that information, you often know where and from whom you can obtain it. Usually, this information comes from a library, scriptorium, university, or a sage or other learned person or creature. Your DM might rule that the knowledge you seek is secreted away in an almost inaccessible place, or that it simply cannot be found.