Hints & Solutions Edit
Highlight the white text inside the block for hints ranging from vague to specific...
Fairly easy research puzzle. A few web searches will get this for you.
Typing "XXX mother of" into your search bar gets you most of these without even needing to hit enter.
The first three are H, F, and I
The last three are A, D, and B
The next section contains the answer. Do not reveal unless you want to be spoiled