When I delved into the study of how to use genetic genealogy, I was interested in learning more about the inheritance of X-DNA. Its inheritance is harder to track that that of mitochondrial DNA in that it isn't just handed on from female to female. Fathers of girls also hand down an x chromosome to their daughters as do their mothers giving the majority of females two x chromosomes. There are handy dandy charts to figure out the X-DNA pattern. Two possible sources are in the links under Sources at the end of this blog post.
As I filled out the name for my own chart, I realized that this different way of arranging the information from my family tree was useful in other ways as well. It was a visual of the lines I haven't been able to extend back very far. Many of those lines stop at females and I think that has a lot to do with the difficulty of ascertaining birth surnames for women whose identities were often swallowed up by the family they married into.
When I look at the names I've been able to fill out it appears that breaks in the line are frequently found after the 2 x great grandparent level. I should be able to update the chart a bit though now that I'm confident about who Mary Maidment's father was. Now I just need to confirm who her mother was and then try to extend both of those lineages back further.
Sources:
https://dna-explained.com/2012/09/27/x-marks-the-spot/
https://familylocket.com/x-dna-inheritance-and-recombination/
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