In all seriousness, though, *IF* there had been a third carrier built, I suspect that it may have been named after Kapitan Ernst Lehmann - one of Germany's most successful airship captains. He not only commanded both Army and Navy airships during WWI, but commanded passenger airships postwar.
He died the day following the Hindenburg disaster, succumbing to horrific burns. As it happens, he was not the captain in charge but along as an observer.