Stephen FAVEL and Sarah SMART married in Brampton in 1796. They had at least 6 children that I know of: John, Frances, Mary, Rebecca, William and Maria. Frances was baptised in Brampton, as were presumably her siblings
I believe John married Anne Gaunt in 1825 in Buckden and died in 1881 in Buckden. Frances married James Gilbert in 1818 in Kensington and died in 1871 in Southwark. Rebecca married George Abbot in 1826 in Grafham and died in 1875 in Grafham.
For William and Maria all I have is baptism dates, 27 Jul 1807 and 14 Feb 1810. With regard to Mary, I have nothing except a mention of a family tree that I came across some time ago.
Please feel free to correct any mistakes or even better to add some detail. Huntingdonshire records seem to be conspicuous by their absence online, making life difficult for those who can't get to the local archives.