One important First Lady in Black history is Michelle Obama, who served as the First Lady of the United States from 2009 to 2017 during her husband Barack Obama's presidency. Michelle Obama is a lawyer, writer, and advocate for various social issues including education, health and wellness, and military families.

She is known for her initiatives such as Let's Move!, which aimed to combat childhood obesity, and Reach Higher, which encouraged young people to pursue higher education. Michelle Obama is also a bestselling author, with her memoir "Becoming" becoming one of the best-selling books of 2018.

As the first African American First Lady of the United States, Michelle Obama was a groundbreaking figure who inspired many people with her grace, intelligence, and commitment to public service. Her impact on American history and culture continues to be felt today.