Thanks to the eagle-eyes of one of my contacts, David Measday, an error was found in the parentage of William HEWETT (b. ~1841), husband of Susan KINGSLAND. I had misinterpreted the relationships given to me from a detailed source, and had linked William directly to his grandfather, making his father his brother(?!), thus skipping a generation.
I have now corrected the tree and updated the version here. The new tree will hopefully be rolled out to other online presences such as Genes Reunited this weekend.
Thanks for spotting my faux-pas, David!