Where does “whomsoever” come from?

I need to work through this chain carefully, but I notice there's a significant problem: the chain provided cycles through "English whom," "English so," "English sol," and "Latin sol" repeatedly, which doesn't form a coherent etymological path to "whomsoever." A legitimate etymology for "whomsoever" would be: whom (object form of who) + so (archaic intensive) + ever, from Old English origins. However, the chain you've provided doesn't support this standard etymology and appears corrupted or incomplete. Given the rule that I must "state only what the chain supports" and "do not invent," I cannot write an accurate sentence because the chain itself doesn't provide a valid etymological sequence for "whomsoever." Could you verify the chain? A proper chain should show how English "whomsoever" derives from its component parts and their origins, likely tracing back through Old English or Proto

whomsoever (English): whichever person, whomever

Definitions

  1. whichever person, whomever

Ancestry of “whomsoever”, step by step

whomsoever traces back through two separate lines of ancestry.

via English soever

StepLanguageWordMeaning
1EnglishsoeverIn any fashion, of any kind; used for emphasis...
2EnglishSoA Mon-Khmer-speaking people of Laos and Thailand;...
3EnglishSolThe Sun, the star orbited by the Earth
4Old Frenchsolalone; sol; Old French coin
5Latinsolidumsolid
6Latinsolidussolid; A solidus: a Roman ~23-carat gold coin...
7Proto-Italicsoliðos
8Proto-Indo-Europeansolh₂-i-dʰ-o-sentire
9Proto-Indo-Europeansolh₂-whole

via English whom

StepLanguageWordMeaning
1EnglishwhomWhat person or people; which person or people, as...
2Middle Englishwhom(to) who, whom accusative or dative
3Old Englishhwām
4Proto-Germanichwammaimasculine/neuter dative of *hwaz
5Proto-Germanichwazwho, what; whose; whom
6Proto-Indo-EuropeankʷosSee *kʷis
7Proto-Indo-Europeankʷ-The primary interrogative root
Every word from Proto-Indo-European solh₂-