Just to add my TWITTY notes:
Thomas Harley Twitty married Sarah Browning 9 April 1804 St Mary, Wilton by Salisbury, Wiltshire.
Thomas H. and Sarah had a son, Thomas Harley Twitty, born 18 April, 1807 and died 6 January 1808 in Salisbury.
They also had a son Henry Twitty, born 30 July 1809, Salisbury and died 24 Dec 1887, Poole, Dorset.
Sometime between around 1809/1810, Thomas Harley Twitty, Snr, died ( I cannot locate a record of this) and Sarah remarried to Thomas Adams Bayley on 30 Sep 1810, St. Martin, Salisbury.
HENRY...
He was christened Henry TWITTY (father's last name) but after Thomas Bayley and Sarah married in 1810, he was called Bayley on all subsequent census. He is also mentioned on Christian Adams Bayley Will. (mother of Thomas A. Bayley
"And in case both my said grandsons shall die under the age of twenty one years and without leaving any child or children there upon trust to convey pay and assure any said estate and effects unto Henry Twitty, son in law (meant step-son in those days) of my late son, his executors, administrators and assigns, etc" written in 1832
His marriage, however, is recorded as TWITTY.
Henry Twitty married Susanna Pitman 24 Sept 1832 at St. James, Poole, Dorset.
Sarah and Thomas A. Bayley went on to have 3 more children, one of whom is my 2x great grandfather.
She was born about 1785 in Salisbury, and died Dec 1821 in Poole, Dorset very close to the birth and death of her third child, daughter Sarah.
Hoping this is of some assistance in your search,
Regards,
Grub