He really was a darling looking thing. I've always found Marie F so tragic in that respect--the loss of all 4 sons, 4 of her 6 total children. Then 5 of her grandchildren on top of it.
The article says: "He died of meningitis in 1870, one month before his first birthday. "The doctors maintain he did not suffer, but we suffered terribly to see and hear him," His parents had him posthumously photographed and sketched to remember him, therefore it is likely that the only existing photograph of Grand Duke Alexander is the one to the right, of the infant in his coffin surrounded by flowers."
Almost all of Christian IX's children (with the exception of Frederick VIII & Waldemar) suffered the loss of multiple children:
Queen Alexandra--Alexander John and Albert Victor
Empress Marie--Nicholas, Alexander, George, Michael
Thyra--Christian and George
George I--Olga and Alexandra