From XMarks The Scot forum:

“The child in the photo (with his father) is Wilhelm II of Germany … later to be Emperor Wilhelm II during World War I (whilst his relatives ‘King George V’ of the UK and ‘Czar Nicholas II’ of Russia were also grand-children of Queen Victoria against Germany during WWI – the same years in which King George V formed the Windsor family to replace the German family name ” “Saxe-Coburg and Gotha” )“