Romanov Connection to the Romanian Royal Family.

I was wondering how many Romanov connection there were to Queen Marie of Romania. It turns out there are a few.

Her mother was a Grand Duchess of Russia before her marriage to a British Prince.

Her grandfather was Tsar of Russia. As was her great-grandfather and his father (tsar Paul I) so she came from a long line of royalty.

Then I began to look farther, as the Romanovs have a long connection to another Royal house, that of her husband Ferdinand, the House of Hohenzollern. With that comes the House of Hesse-Darmstadt ( which later become Hesse and by Rhine)

Still I am wondering how many connections there are to The Romanian Royal House to the Romanovs now.