significance of St. Pancras

St. Pancras is the churchyard where Mary Wollstonecraft was buried when she died giving birth to daughter Mary Godwin. This is where Mary and Percy had their trysts that led to their elopement:

Mary and Percy began meeting each other secretly at Mary Wollstonecraft's grave in St Pancras Churchyard, and they fell in love—she was nearly seventeen, he nearly twenty-two.^[26]