Image 562 of the same series of images of the baptism of Dorothy Heaviside gives the burial of her father. John Heaviside as 16 August 1830 six weeks after the baptism of Dorothy. Both the residence of Dorothy and John are given as Court Lane, Durham. John aged 41 on the burial and Schoolmaster on the baptism. However Mary Wandless, second wife of John Heaviside, did have 4 children born outside of the marriage with no known fathers. William Wandless, bap 19 August 1824, Jesuits, Durham City. Ann Heaviside, born Newcastle-upon-Tyne, 1833. Margaret and Frederick Heaviside both bap 11 May 1836, St. Oswald, Durham City.