So, Jessica Mitford was a lady who lived a long time ago. She was born in 1917 and died in 1996. She was part of a big family with lots of brothers and sisters.
Now, Jessica was a very smart lady and she liked to write stories and books. One of her most famous books was called "The American Way of Death" and it was about how we handle dead bodies in America.
She thought that it was wrong the way that some people took advantage of other people when they were sad and grieving. So, she wrote about it to try to make things better.
Jessica Mitford was also a very brave woman. She was a part of a group that wanted to make the government be more fair to people who worked for them. This group was called the Communist Party, and at the time, many people were scared of them.
But, Jessica didn't care. She believed in what the Communist Party was trying to do, which was to make things more equal for everyone. She was even able to go to court and defend herself and her beliefs when people tried to say bad things about her.
In the end, Jessica Mitford was a lady who wanted the world to be a better place. She believed in being fair and equal to everyone, and she fought for her beliefs until the end of her life.