I was a DJ in the 90ies and needed a DJ name. I was looking for one and when I was on my way to Berlin for the Love Parade by train - already half drunk. And the we stopped in the city Jena, in the part Paradies, so the sign Spain "Jena Paradies" and I thought it was the perfect name for me as a DJ.
Then I added another e and dropped the "last name" part and here we are with "Jeena"