Wealth

google

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Middle English welthe, from well1 or weal2, on the pattern of health .

wiktionary

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From Middle English welth, welthe, weolthe(“happiness, prosperity”), from Old English *welþ, weleþu, from Proto-West Germanic *waliþu(“wealth”).

Alternatively, possibly an alteration (due to similar words in -th: compare helth(“health”), derth(“dearth”)) of wele(“wealth, well-being, weal”), from Old English wela(“wealth, prosperity”), from Proto-Germanic *walô(“well-being, prosperity”), from Proto-Indo-European *wel-(“good, best”); equivalent to weal +‎ -th. Cognate with Dutch weelde(“wealth”), Low German weelde(“wealth”), Old High German welida, welitha(“wealth”). Related also to German Wohl(“welfare, well-being, weal”), Danish vel(“weal, welfare”), Swedish väl(“well-being, weal”). More at weal, well.

etymonline

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wealth (n.)

mid-13c., "happiness," also "prosperity in abundance of possessions or riches," from Middle English wele "well-being" (see weal (n.1)) on analogy of health.