Where does “Quaker” come from?

I appreciate the detailed rules, but I need to flag an issue: the etymological chain provided doesn't support "Quaker" as an English word derived from Chinese 兒, Old French -er, and Latin roots. This chain appears to trace suffixes (-er, -are, -arius, -us, -os) rather than the root morpheme of "Quaker." Quaker actually derives from English "quake" (to shake) + the agent suffix "-er" (one who quakes), referring to members of the Religious Society of Friends who were said to quake or tremble during spiritual experiences. I cannot write an accurate one-sentence etymology using the chain as given, because doing so would violate the rule to "state only what the chain supports" and would require inventing a false connection. Could you clarify: Is this chain meant for a different headword, or should I work with the actual etymology of

Quaker (English): A believer of the Quaker faith and a member of...