surname, place name
蔿 is a rare kanji used primarily as a surname or place name. Its standalone meaning is unclear beyond these proper-noun uses.
蔿 combines the grass radical 艹 with 爲, which may have contributed sound or meaning, but the exact historical development is uncertain.
The grass radical 艹 over 爲 suggests a name connected to plants or a place, but the meaning is best remembered as a surname or location.
For イ, imagine a person named 蔿 introducing themselves with a simple 'E' sound: E -> イ, like the letter E.
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