For your mother it looks okay - is she fully English? I was excited about this calc because for a lot of British individuals I tested they were getting scores that seemed broadly consistent with historic BI migrations. There was even one English kit that was around 60% Celtic and 40% Germanic, which seemed consistent with the one of the more recent studies that suggest English are around 35-40% Anglo Saxon. I may have to try mixing ancient samples with modern ones as I did with the Slavic samples.

