Many thanks for your replies and kind words.
My 364cM match is the home person on a standalone tree that I have on Ancestry (it is set as Private), the tree now consists of 600 people and it goes back to the late 1700’s in Ireland.
I now have about 15 DNA matches to myself within the tree and they all have a link back to the same Irish family.
The 364cM match does not have a tree but their Daughter has a tree of 11 and I used the visible people in that tree as my starter tree. Other DNA match’s have trees and others do not but I am lucky in that actual names have been used hence expanding the prime tree was time consuming but easy. Well easy for the most part as some of the shared match’s have been in contact but it is a wip getting them into the tree.
I have Colour Coded the match’s using Ancestry’s system and today there are 42 Cousins who could be added to the tree but that is only using match’s who are more than a 30cm match.
My 364 cM match is 8 years older than I and was born and raised in and still lives in Bradford, which is where my Maternal Grandfather was born but he lived in Canada from 1903 and died in 1931.
In the 364cM family tree the shared match’s all work out in the right ball park relationship if I put myself, my Dad and Grandfather in the tree and have Grandad’s Father as an Irishman who was born in 1860.
The 364 cM is possibly higher than it should be and there may be my Maternal Bradford family DNA getting into the other branch of the 364 cM’s family thus skewing the results. The 364cM Match’s First Cousins only share half the DNA with me which is why I suspect that there may be an NPE in their tree.
As it is Ancestry’s Sideview has listed the DNA match’s as Paternal which falls in line with my chart in the prior post as where my own NPE is likely to have occurred.
As for location my Lancastrian Great Great Grandmother put her favours around as did her Sister with both having at least two children out if wedlock and by different Fathers given the locational changes so maybe her Daughter was equally promiscuous?
DNA test results awaited from two of my Cousins will help clarify my hypothesis.