Sorry for not picking up your messages on the forum earlier - I've had computer problems and have only just recovered from it!
I'll be happy to share what information I have on our branch of the Sheffield Dewsnaps - John Samuel Dewsnap was my Great Grandfather and my son and I are the carrying on the Dewsnap name on his line.
Although I have a fair amount of detail of John Samuel, I have little information of his siblings - hopefully you may be able to help fill in some of the blanks.
The information I have is:-
His Great grandparents were:
Francis Dewsnap b. abt 1748 and Hannah Bream?
Their Children were:
George Dewsnapb. abt 1775
William Dewsnapb. abt 1778
Charles Dewsnapb. abt 1780
Francis Dewsnapbpt 21st May 1782
James Dewsnapbpt 6th January 1793
His grandparents were:
Francis Dewsnap bpt 21syt May 1782 and Letitia Milns b. 27th April 1783 They were married on 14th June 1807 at Dronfield, Derbyshire
Their Children were:
William Henry Dewsnapbpt 19th June 1808
George Dewsnapb. 7th Dec 1810
Francis Dewsnapbpt 14 February 1813
Samuel Dewsnapbpt 24th May 1815
Alfred Dewsnapbpt 21st Sept 1817
His parents were:
George Dewsnap b. 7th Dec 1810 and Elizabeth Skelton b. 3rd March 1816, d. 31 March 1910
Their children were:
Francis Dewsnapb. abt 1838
Emily Dewsnapb. abt 1840
Edwin Dewsnapb. abt 1843
John Samuel Dewsnapb. 25th October 1846
George Dewsnapb. abt 1850
Samuel Skelton Dewsnapb.. abt July 1852
On John Samuels Birth Certificate, his father Georges occupation is given as Razor Grinder – John Samuel worked for over 50 years in the pocket knife department of Joseph Rodgers & sons, rising to be manager at the time of his death in 1915.
You may find that there are references to Derbyshire placenames – although Sheffield has always been in Yorkshire, the boundary with Derbyshire was only about 4 miles south of the city in those times
I hope this is of interest to you and your friend. I would be interested to learn more of George Francis Stuart and your other links.
Unfortunately I haven't got around to a web site yet!