Quote from: retroverseworld on July 12, 2022, 07:36:19 PM

it's a line from Kubla Khan, and as I said; I was using it for practice purposes only

Quote from: retroverseworld on July 14, 2022, 10:19:33 PM

I know 100% I used a wallet that generated the 12 word seed which I wrote down and found in my note books.

This doesn't add up. You either used a poem, and something like a brain wallet, or you used random seed represented in the form of 12 words to reduce mistakes writing it down. Wallets don't generate poems.

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I know 100% when I plug those seeds into Electrum they're accepted by Electrum without issue

That's the part I don't get: "weave circle round thrice close your eyes holy dread honey hath jan" is indeed accepted, which means all words are on the 2048 word list. It could be a coincidence all words in the poem are on the list, but that still doesn't explain how you ended up with the words from a poem. I don't believe a random seed ends up this close to a poem.

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I know 100% I successfully transferred coins between the wallets over a very short period of a week or 2 max

If you know the exact amount and approximate date, you might be able to find your transaction on-chain. Blockchair has data dumps for this.

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Does anyone have an idea what wallet type that had the same look and feel as Electrum existed in or before 2011?

Have you looked at old topics on Bitcointalk? To get you started, here's a list of the first 10,000 topics: loyce.club/other/titles.html.