Penelope Lyttelton, Viscountess Cobham is a woman who has a fancy title because she married a man who also had a fancy title. Her real name is Penelope Lyttelton, but because she married a man who is a Viscount, she gets to be called Viscountess too.
Now, a Viscount is a very important person in England, sort of like a prince but not really. People call them Lord or Lady and they have a lot of money and a big house. The Viscountess has a big house too and lots of fancy things.
But even though she is rich and important, the Viscountess does not just spend all her time doing fancy things. She likes to help other people and make things better for them. She is especially interested in making parks and gardens nice for people to visit and enjoy.
The Viscountess is also a member of a group of people called the House of Lords, which is a very important part of the government in England. They make laws and decide what is fair and right for the country. So the Viscountess is very smart and knows a lot about how to make things better for people.
Overall, the Viscountess is a rich and important lady who wants to help other people and make the world a nicer place for everyone to live.