Okay, I'll Translate this for ya. I tiped "First Supersonic Airliner" on Google and here's what it says:
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"Is in 1947 when the American pilot Chuck Yeager breaks the barrier of sound for the first time on his rocket-plane Bell X-1. In 1961 Nikita Krushchev first heard about the English-French project for a Supersonic Airliner: the Concorde".
And I kept reading, just in case, but no, it still says the Concorde was the first One.