Ada Lovelace's mother, Annabella Byron, was a well-known writer and socialite. While she wasn't a poet in the traditional sense, she did write a significant amount of prose, including her own autobiography.
However, it was Ada's father, Lord Byron, who was a renowned poet, considered one of the most important figures of the Romantic movement.
So, while Ada's mother wasn't a poet, her father was a very famous one.