OK, I've squinted until I'm cross-eyed and gone through relative lists and here's what I think:
back row: Prince Albert of S-Holstein (NOT Helena's son), Caroline Mathilde of S-Holstein (sister of VA--the youngest and still unmarried), Duchess of Albany, Infante Alfonso, ?? (I don't know if she's royal or not--she didn't look familiar and I couldn't place her in any pertinent age group), Duke Charles Edward
front: Philip of Coburg (husband of Louise of Belgium whom we were discussing in another thread), ?? could be married to Albert or be another female relative but not one of VA's sisters, VA with Caroline Mathilde (named after her sister I guess!), Baby Bee, Ludwig of Bavaria (last King of Bavaria though he was just Regent then--wonder if he was a godfather?)
children: 3 eldest of CE & VA (Hubertus, Sibylla later Crown Princess of Sweden, Johann Leopold)