I have tested autosomal with FTDNA. I have recently been contacted by a match, I shall call her MA. Our extremely well documented paper research confirms our links. We have a common male ancestor, with a very rare surname, I shall call GC. Our paper trail confirms she is a third cousin, once removed from GC. We share 47 centimorgans and long block 16. So far so good.
MA is descended directly along the female line, from the youngest daughter and only surviving child of GC, from his first marriage. I ( a female) am descended from the son of GC 's second marriage. In other words MA is descended from my ggrandfather's half sister.
MA and her family still live within the vicinity of the small town in Yorkshire.
The problem I have:
MA and I share the X chromosome at 5.51cms. (So does her daughter but at a smaller level)
According to my charting of relationships and the Xchromosome, MA could get the X from our common ancestor GC through his daughter. But not me as I am descended from his son, albeit from a second marriage.
My confusion arises from how can this be? or is the 5.51cms too small to worry about? or is there something else going on? or I have misunderstood the whole concept?
I do hope this makes sense to read. Thank you, Gazania