William Ball and Margaret Bailey are my great, great grandparents. From research by my late aunt more than 30 years ago, which included interviews with her father (William's grandson), we have the following:
William b. c1813, d.1871.
Margaret b.1821, d.1904
First two children not known but believed born in England and we don't know whether they came to South Australia, died in infancy or stayed in England.
William: b. 1844, d.1868
James: b.1847, d.1926
Margaret: b.c1850, d.1926
Eliza: b.1851, d. ?
Amelia: b.1853, d. ?
Charlotte: birth and death unknown, died in infancy
Charles: b.1863, d.1930