I'm sorry I didn't get to finish the post properly last time, but here is some more info for everyone.
Although I agree with you BeatrixFan about the Emperors approval of the marriage in 1907, I must also add that if the Emperor considered the marriage not to be morganatic, then can't it be said the other, equally morganatic or legal marriages (depending on how you see it), can be deemed legal according to dynastic laws?
Therefore all marriages between dynasts and subject noblewomen/men could produce children who would be allowed to take their place in the line of dynastic succession alongside (so to speak, because it is succession after all) children of dynast to dynast marriages.
Also in reference to my statement about more debates, opponents debate that Maria's grandfather, whose full title was 'HIH Grand Duke Cyril Vladimirovitch', married a divorcée, whose former husband was HRH Grand Duke Ernest Ludwig of Hesse.
Maria's supporters counter by saying the laws governing the succession do not include laws forbidding marriages to divorcées.
And Grand Duke Cyril and Grand Duchess Viktoria were first cousins, and first cousins marrying was prohibited by the Russian Orthodox Church.
Maria's supporters point out that all her opponents derive their own claims from being descendants of Emperor Nicholas I whose wife was his second cousin, a relationship also forbidden by the Russian Orthodox Church.
If a church prohibition of consanguinity renders children of such a marriage ineligible to succeed, then none of today's claimants are eligible either, nor could Alexander II, Alexander III or Nicholas II ever have succeeded to the throne (and since they succeeded, their cases prove the prevalent application of dynastic law that a child of a prohibited marriage is not barred from succession.
None of the claimants say they have a better claim than Maria, they just say that she does not have a valid claim herself.
Maria's supporters also counter the consanguinity objection on the basis that the Emperor gave his approval to the marriage, and the Emperor was then the supreme head of the Russian Orthodox Church.
Again Maria's opponents counter saying that the Emperor was not able to change Church Law by his own decision. Instead, an act in ecclesiastical synods or councils would have been needed. However, the Orthodox Church does not condemn children of consanguineous marriages nor their rights to inheritance, so this argument is basically weak anyway.
Another argument is that at the time of their marriage, Grand Duchess Viktoria was a
Protestant, not
Orthodox..
Maria and her supporters counter that this objection is overcome by the Emperor's approval of the marriage. According to them, under dynastic law, the Emperor designated which of the dynasts had to marry Orthodox women; usually such requirement was placed on persons who were high on the succession line. At the time of his marriage, Grand Duke Cyril was not one of these people. There exists no prohibition of the Orthodox church for its members to marry Protestants. And later, Viktoria Fedorovna embraced the Orthodox faith, receiving a published accolade from the Emperor Nicholas II. At the time of Vladimir Cyrillovich's birth, his mother already had long been Orthodox.
My last post referred to female succession and I'll continue in more detail now, the opponents say that under the laws of the Russian Empire as they stood in 1917, no female could take the throne of Russia. This argument is not valid because Emperor Paul I of Russia established in the succession laws that upon extinction of male dynasts, females could succeed. While there are still a large number of males among Romanov descendants, Maria's supporters do not consider them to be dynasts.
Neither Maria Vladimirovna nor Nicholas Romanov nor any other prince Romanov pursues a position that can actually be solved in law, since the Headship of Imperial Russia is not a property or like which would be justiciable somewhere in functioning courts.
Unless for some reason the monarchy in Russia rises to power again, there will never be any real resolution to this quarrel.
Maria has openly stated that she considers herself the Curatrix to the Throne, as do many monarchists in Russia. Her father's claim as Tsar in Exile was very disputed by other members of his family. One said: "To say the family is divided is a euphemism. The family is raving mad." Maria hopes for the restoration of the monarchy someday, but polls have shown a very discouraging future for the Romanov family.