Interesting interpretation; that it was the lack of betrothal that led to their failed children. Personally, I feel like it boils down to the (for some reason) immutable law that "every Great One loses its child", and so whether or not the woman is somehow bonded to the Great One probably has no impact. But it is fun to think about nonetheless.

Also, you're absolutely right about the naming scheme. Furthermore, as you may or may not have noticed, both of the blood saints start with "Adel" (Adella and Adeline). Adel is German for nobility; whether or not this has any bearing, I don't know, but I kept the trend up by naming my saint Adelicia; felt like it kept the spirit of the creator alive, even if his intent is unknown to me.

You make a good point with the player knowing that marriage is a thing, regardless of their and Annalise's specifics, but that might still lead to a clash of cultures so to speak. It's quite possible that marriage as we know it exists in myriad places in BB's world, but has different meanings in different places. For all we know, mundane marriages may exist all over the place, while still being a somewhat esoteric and occult practice in Yharnam, and the player simply doesn't know any better. Or chooses to defy expectations on purpose. Maybe it's an act of willfulness to propose to a queen. Or maybe it's a symbolic act meant to cement your submission to her, more a bond of servitude than romance. I dunno. :P (And while on the subject, I feel it's a shame we won't get to know more about her; I find Annalise to be a very interesting character, and by extension the whole Vileblood thing. After a Blood Saint, one of their ilk would probably have been my choice of character. Maybe I'll write one sometime down the line. I have some ideas already.)

Nice find on the comic; I hadn't read any of them, I admit. Not sure what to make of that though. Since Miyazaki wasn't the writer, we can't be sure that the writer wasn't just making assumptions about how marriage works without consulting the original creator. It's also possible that it was simply an approximate translation (the comic is Jap in origin, or?). And of course it's really up to anyone whether or not they want to consider it canon material in the first place.

...Man we went on a huge tangent about marriage huh?