Proper nouns indicate a person place or thing

A proper noun is usually understood as a noun that is capitalized. In order to be a proper noun, like any other noun, the word must be a person, place, thing, or idea.

When at the beginning of a sentence, it does not matter whether or not the noun is proper: it is capitalized anyway. This is exactly why you have to learn exactly which words are proper nouns by memorization.

the words “strangest” and “unusual” suggest that the narrator is about to tell the story of an odd or puzzling group of people.

what are you asking? this is gibberish.