Passage: Charlotte Brontë was born on 21 April 1816 in Market Street Thornton, west of Bradford in the West Riding of Yorkshire, the third of the six children of Maria (née Branwell) and Patrick Brontë (formerly surnamed Brunty), an Irish Anglican clergyman. In 1820 her family moved a few miles to the village of Haworth, where her father had been appointed perpetual curate of St Michael and All Angels Church. Maria died of cancer on 15 September 1821, leaving five daughters, Maria, Elizabeth, Charlotte, Emily and Anne, and a son, Branwell, to be taken care of by her sister, Elizabeth Branwell.

Question: When did Maria Die?
15 September 1821