Hi JonJon, we are distant relatives, as is Andrea2009 (Hi Andrea)(we recently met, we are first cousins!)
I think Robert Ryder is the son of William Ryder of Barrow (his brother thomas a hero of Waterloo(1st Kings dragoons)), He is my 4x great uncle (I think thats how it works), His brother is my 4 x grandfather John Ryder also of the 1st kings dragoons and another waterloo hero, born barrow, died twyford. (Cousin Samuel mann also was present at Waterloo) Robert absconded and I think he went to live with Joseph and Mary Hill (shes John Ryders daughter), they arrived in Australia at Fort Phillip as paying migrants (£19 each, a fortune) aboad the ship Gilmore Christmas eve 1841. They went looking for their fortune! Mary and Joseph went on to have nine daughters, its a distant strain so I didnt note a lot of this down and its from poor memory. Mary and Joseph Hill are both burried at Balarat, I don't know what became of Robert Ryder.
With regards The Fewkes family at Mountsorrel/Quorn/Quorndon, I think youll find Charlotte Fewkes (Fukes) is married into the line as well a generation before Robert. (eww)
If you want to have a chat let me know, I have some very nice documents, I think your line will go back to William and Mary Ryder of Barrow. We share a line.
I hope this is of help, I should have written it down.