Where does “soever” come from?

I can't write this etymology summary because the chain provided shows only "sol" repeated across English and Latin without explaining how "soever" derives from it, and the known meaning is listed as unknown, making it impossible to accurately trace the sense development required by the rules. Could you provide: 1. The actual etymological chain for "soever" 2. The known meaning(s) of the word 3. Clarification on whether this chain is complete

soever (English): In any fashion, of any kind; used for emphasis...

Definitions

  1. In any fashion, of any kind; used for emphasis...

Ancestry of “soever”, step by step

soever traces back through two separate lines of ancestry.

via English So

StepLanguageWordMeaning
1EnglishSoA Mon-Khmer-speaking people of Laos and Thailand;...
2EnglishSolThe Sun, the star orbited by the Earth
3Old Frenchsolalone; sol; Old French coin
4Latinsolidumsolid
5Latinsolidussolid; A solidus: a Roman ~23-carat gold coin...
6Proto-Italicsoliðos
7Proto-Indo-Europeansolh₂-i-dʰ-o-sentire
8Proto-Indo-Europeansolh₂-whole

via English ever

StepLanguageWordMeaning
1EnglisheverAlways, frequently, forever; Continuously,...
2Middle Englisheverever
3Old Englishǣfre

Words derived from “soever

Every word from Proto-Indo-European solh₂-