お兄ちゃんには一番知られたくなかったかな

I'm confused. Google Translate says "I don't want brother to know the best",
but I'm not convinced at all.
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2018-12-05T19:20:06.217
63260
2018-12-06T13:22:58.747
2018-12-05T22:17:01.933
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question
translation
What does this mean?
> お兄ちゃんには一番知られたくなかったかな

I guess my brother is the last person I wanted to let know (litt: I didn't
want to be known by my brother the most)
CC BY-SA 4.0
2018-12-05T20:01:48.503
63263
2018-12-06T13:22:58.747
2018-12-06T13:22:58.747
63260
answer