Complex sentence: Anne Lister (1791--1840) was a well-off Yorkshire landowner, diarist and traveller who is often called "the first modern lesbian" for her clear self-knowledge and openly lesbian lifestyle.
Split into simpler sentences: Anne Lister (1791--1840) was a well-off Yorkshire landowner, diarist and traveller. Lister is often called "the first modern lesbian" for her clear self-knowledge and openly lesbian lifestyle.