You're asking about Jill Biden, the wife of Joe Biden! Her full name is Jill Tracy Jacobs Biden, and she has been married to Joe Biden since 1977. She is a former educator and now serves as the First Lady of the United States. She has been a vocal advocate for education, military families, and cancer research, and has also written several books. In addition to her many accomplishments, she is also known for her down-to-earth personality and her love for her family.