Historical Element- Finding gold for money

Sibyl's family is poor.  The conclusion that the brother comes to is to go to Australia and discover gold. Know lets think back in the day... most people tried to discover gold to get money.  Another historical element I found was on pg. 89,  it talks about Dorian's butler giving him letters. Lets break this down. Today  the way of communication is what... cell phones, not letters.  This is how people communicated back then. Another historical element was Dorian going to the theater. Back in the victorian days they had theaters and he also describes his surroundings being grimy and black. Thats how things look in the bad parts of town. Also, the name Lord Henry and Lady Henry. If people were lords or powerful they had lord in front of their name. And the wife takes the husbands name.