Query on children of Ann MARSH

Ann (Marsh - Mash) Alley - Irving - Flannagan - Chapman [Convict "Lady Juliana" 1790] arrived in Australia in 1790 and had the following children

with Richard Alley, Free Settler "Lady Juliana" 1790
* 1791 Charlotte Maria Alley, infant

with John Irving [Convict "Lady Penrhyn" 1788]
* 1796 Capt. John Hamilton Irving

with Robert (Flanagan) Flannagan [Convict "Boddingtons" 1793]
* 1797 Susannah Hunter
* 1798 Elizabeth Chapman - Priest

with William Chapman [Convict "Pitt" 1792]
* 1800 Ann Eliza Innes
* 1801 William Henry Chapman
* 1804 Mary Ann Turner
* 1805 Edward Chapman
* 1808 George Chapman
* 1810 James Chapman
* 1811 Charlotte Chapman

There are also these children on Geni
* 1788 Mehetable Chapman in England (father John Chapman)
* 1791 Mary Rule (Chapman) in England (father John Chapman)
* 1793 Sarah Jude (Chapman) in England (father John Chapman)
* 1798 Thomas Chapman England (father John Chapman)
* 1802 George Chapman in England (father John Chapman)
* 1806 Francis Chapman in England (father John Chapman)
* 1808 Elizabeth Dilley in England (father John Chapman)
* 1810 Ann Kneaves in England (father John Chapman)
* 1824 Lucy Chapman in England (father John Chapman)
* 1824 Joseph Chapman in England (father John Chapman)

Ann was in Australia so cannot have had children with John CHAPMAN in England

Can anyone add any information on John CHAPMAN and the children?