Seeing "Hopkins's" is very weird to me. I was taught that the possessive of a noun ending in "s" just got a trailing apostrophe. Is that no longer the norm?
Edit:
As a partially related aside, I have a friend who's right about the same age as me that's incredulous that I was taught to use "they" as a gender neutral pronoun when the subject's gender was unknown (or you desired not convey a gender) back in the late 80s and early 90s. Maybe it's just a regional difference in teaching or something. He's from the UP of Michigan, I'm from Florida. So maybe the same thing is true with possessive nouns
Edit: As a partially related aside, I have a friend who's right about the same age as me that's incredulous that I was taught to use "they" as a gender neutral pronoun when the subject's gender was unknown (or you desired not convey a gender) back in the late 80s and early 90s. Maybe it's just a regional difference in teaching or something. He's from the UP of Michigan, I'm from Florida. So maybe the same thing is true with possessive nouns