One thing are the paintings, another are the eyes and the mind of contemporaries ... some memories from french diplomats, hight ranked travellers , etc , describe GD Olga Nicolaevna as a girl
"with the look and the manners of a blond fairy". GD Maria Nicolaevna, on contrary, is described as high-handed and ... not so pretty (
"a long face very similar to the one of her father") and also as a princess VERY skilled on the cultural and artistic matters. GD Alexandra Nicolaevna is ignored in these chronicles but we have to consider that she married rather young, died after 8 monthes and not had a long
social life... when GD Maria had one in Russia from 1839 to 1860 and GD Olga from 1840 to 1846...
To be noted that the first choice of Nicolas AND of OLGA , for a fiancé, was certainly Archduke Stephan Franz Victor of Austria,
but Metternich remained absolutely opposed. At this time he was governor (civil governor) of Bohemia and in 1847 became Palatin of Ungheria (civil and military governor). (once upon a time, in Hungary, someone said to me that, as writes Eric Lowe in courteous manner,
Stefan played on the other team as well). (t.b.n. that AD Stefan Franz Viktor never married). AD Stefan's father first wife was GD Alexandra Pawlovna.
Anyway, after the european revolutionaries riots of 1848, AD Stefan had an austrian military carreer, then retired and died in south of France (Menton) in 1867.
Returning now in Russia 1840....
many young princes were in love with Olga , as Prince Baryatinsky and also Alexander of Hesse (brother of Imperatrice Maria - the wife of Alexander 2), etc, etc... (the russian ones, generally Nicolas gently sended them to Finland or Caucase or farest...)
Later on (1851) Alexander of Hesse married a lady-in-waiting of his sister (hudge scandal !!) Julia Von Hauke (from this wedding, the Battenberg-Mountbatten, etc). The father of Julia, anyway, was considered a hero as he died in Poland in 1830 to protect GD Konstantin Pavlovitch from the rioters but Julia was not in the Almanach du Gotha as a fiancée for a royal wedding...
Why did Nicolas 1 desagreed Alexander for marrying Olga ? He was a third son and had few possibilities to regn! But Nicolas 1 considered Alexandre a possible groom for one of his nieces... so one can immagine how much this morganatic marriage deceived the Emperor ....