Hi Karen
Thank you very much for that info, much appreciated. I had no idea about the naming tradition - that's really interesting

The information that I have on James and Marion is precious little. I know James was born around 1790 and married Marion Russell in Muirkirk.
James Fisher and Marion Russell had Margaret Fisher born 1825 in Muirkirk. They then had Catherine Fisher born 1829. I found Margaret on the 1841 census working as a servant for a Robert Russell but have been unable to connect this Robert Russell to the right Marion Russell so far.
The James and Marion whom I know to
definitely be my ggggrandparents had a daughter Mary born in Durham 1836 where James is listed as a pedlar. They then had a daughter Elizabeth also born in Durham in 1838.
James and Marion move to Carlisle and remain there for the rest of their lives. James is listed as a weaver. He died 1859. Marion was listed as a washer woman and died 1870.
As well as Mary and Elizabeth, James and Marion had their first son Thomas Wilson Fisher born 1841 died 1842. (I have found a reference to a James fisher born to a Fisher who's spouse was a Wilson so I did wonder if these could be James's parents?).
Joseph Sisson, my gggrand father, was then born in 1844.
Joseph Sisson married an Amelia Diggle in Carlisle and had 8 children, 6 lived. I only know the names of the 6 who lived though I do suspect one who died was called Amelia.
The 6 children, in chronological order, are as follows:
John James
Arthur Edward
Henry
Elizabeth Marion
Joseph Sisson
Alice
Young Joseph Sisson moved from Carlisle to Ayrshire and also had a son called Joseph Sisson in 1915.
I found Catherine Fisher living with a Mrs Fisher on the Scottish 1841 census and my Marion Fisher listed as Mary living in Carlisle on the English 1841 census which would suggest the 2 Marions are different people. However, James is not listed as living with the Mary in Carlisle and I do wonder, looking at the really bad handwriting on the 1841 Scottish census, if it really does say Mrs and not Mr...
Aaaaaaaaaagh! it is a nightmare and any help you could give me would be greatly appreciated!
Many thanks,
Mel