Hi - I know your message was an old one but I've only just found it! I am descended from Charlotte Alderton, nee Barrell (or is it Barrett?) who married George Bolderstone 19/08/1808 after John Alderton's death (05/02/1805 aged 30). I know the Aldertons had 4 children:
Mary b. 14/04/1798 Sophia b. 02/02/1800 James (yours) b. 01/01/1802 Thomas b. 20/01/1804
After she married George Bolderstone she went on to have several more! I can send a great deal of info on them (my mother was a Balderston). But know nothing about the Aldertons! Would be delighted to share any info.