The following year, Joseph Carey Merrick was born, apparently healthy, and had no outward symptoms of any disorder for the first few years of his life. Named after his father, he was given the middle name Carey by his mother, a Baptist, after the preacher William Carey. The Merricks had two more children, not three as stated on his mother's grave. John Thomas, born 21 April 1864, who died of smallpox on 24 July of the same year, was not related to Joseph and Mary Jane Merrick. The other two children were: William Arthur, born January 1866, who died of scarlet fever on 21 December 1870 aged four and was buried on Christmas Day 1870; and Marian Eliza, born 28 September 1867, who was born with physical disabilities and died of myelitis and "seizures" on 19 March 1891, aged 24. William is buried with his mother, aunts and uncles in Welford Road Cemetery in Leicester while Marian is buried with her father in Belgrave Cemetery in Leicester. In his book The Elephant Man: A Study in Human Dignity, Ashley Montagu states that "John Thomas [sic] Merrick was born on 21 April 1864". Montagu believed Treves's statement in his book, The Elephant Man and Other Reminiscences, referring to Merrick's first name as John, not Joseph, was due to confusing him with his supposed younger brother, who was later discovered to be of no relation to Joseph Merrick.