and you believe that all biblical references are true ?
As to sadie's pointers as you call them, I take them with a pinch of salt, preferably from the Dead Sea. 
Before most people could read and write the history of the people was recorded in stories, songs, poems. Genealogies were remembered and recited back to the dawning of time.
Sadie seems to have a lot more of that race memory at her fingertips than the Scottish part of you. So please don't scoff when you have no idea what you are scoffing at.
In another place having run out calumnies with which to castigate Madeleine McCann's parents I note the 'experts' are delving into the mysteries surrounding their respective genealogies ... whatever next!
What drives these people to the extremes of delving not only into every aspect of the Drs McCann's lives but to obsessively checking out their family trees?
Hope you're not thinking of going down that route.