Col. Jonas FITZHERBERT and his father Vice-Admiral Thomas FITZHERBERT were part of the Cucklington branch which is part of the Somersal Herbert branch which is an offshoot of the Norbury branch.
Mary Anne (Maria) SMYTHE married (in 1775) Thomas FITZHERBERT, head of the Norbury branch at the time.
The Vice-Admiral married Margaret Langford (I thought Langford was her middle name and I don't know her maiden name), Jonas was their 3rd and, I believe, youngest child. He had 3 children that I know of (I don't know his wife's name) Thomas, Alicia and Susan.
If you know more I'd be interested in the information.