Where does “southerner” come from?

I can't write this etymology summary because the chain provided only contains English at every stage with no progression to older languages, and the "known meaning" is listed as unknown. A valid etymology requires: 1. A documented meaning for the headword 2. A chain progressing through different languages (e.g., English → Old English → Proto-Germanic, etc.) The repetitive English-only chain doesn't show language evolution. Could you provide the actual etymological chain and a documented meaning for "southerner"?

southerner (English): A native or inhabitant of the south of a region (or of the world as a whole), such as the United Kingdom

Definitions

  1. A native or inhabitant of the south of a region (or of the world as a whole), such as the United Kingdom

Ancestry of “southerner”, step by step

southerner traces back through two separate lines of ancestry.

via English Southerner

StepLanguageWordMeaning
1EnglishSouthernerAlternative letter-case form of southerner;...
2English-erA person or thing that does an action indicated...
3Middle English-eragentive suffix; agent noun suffix
4Old French-erAlternative form of -ier, verbal suffix;...
5Latin-ārefirst conjugation
6Proto-Italic-āōForms primarily denominative verbs
7Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-
10Chichewaiyehe, she

via English southern

StepLanguageWordMeaning
1EnglishsouthernOf, facing, situated in, or related to the south;...
2Middle Englishsouthernesouthern
3Old Englishsūþernesouthern, southerly, coming from the south; of...
4Proto-Germanicsunþrōnijazsouthern
5Proto-Indo-Europeansóh₂wl̥sun
Every word from Chichewa iyeEvery word from English -erEvery word from Proto-Indo-European -yéti