Claire Gruzelier was born and educated in Auckland, New Zealand and came to the United Kingdom with a Commonwealth Scholarship to study for a post-graduate degree in Classics at Oxford. She met her husband there and, after she gained a teaching qualification in London, they lived for a number of years in Cambridge. Here she began her teaching career and also had two daughters.
In 2018 she and her husband moved to Bristol and she teaches Classics at a secondary school in the area.
She has published books and journal articles on Silver Latin Epic poetry and helps edit the Classics magazine 'Omnibus'.