"With respect to names"
The naming of Angela appears to be the key. In our previous research, Angela Dorothea Kasne does NOT follow traditional values of that time. That appears to be the "red flag."
It appears, anon has made the connection. Consider.
The thing that leads to Saxe-Coburg-Gotha is that Merkel was born Angela Dorothea Kasner. In those days German names ran in families according to certain rules. Hitler's sister was Angela and she had a daughter Angela "Geli" Raubal who was Hitler's mistress.
To follow what is being suggested, we go to German Naming Patterns web site.
German families often used the following pattern for naming children. Again, though, there were several variations used, and often the pattern was disrupted by other circumstances. When a duplicate name occurred in these patterns, the next name in the pattern was usually used. Often when a child died in infancy, his/her name was reused for the next child of the same gender. Too, a child's name was sometimes repeated when a spouse died and the surviving spouse remarried and had more children. This would result in half-siblings with the same name.
Taking from Wikipedia, Angela in my opinion a devoted marxist. She denies that.
Merkel was educated at Karl Marx University, Leipzig, where she studied physics from 1973 to 1978.[22]. At school, she learned to speak Russian fluently, and was awarded prizes for her proficiency in Russian and Mathematics.[31]
At the Academy of Sciences, she became a member of its FDJ secretariat. According to her former colleagues, she openly propagated Marxism as the secretary for "Agitation and Propaganda".[29] However, Merkel has denied this claim