No. Polish/Greek and born in Imperial Germany. Became a Polish national after WW1.
https://en.wikipedia.org/wiki/Ernst_Stavro_Blofeld"Correctly foreseeing the coming of the Second World War, Blofeld made copies of top-secret wires and sold them for cash to Nazi Germany. Before the German invasion of Poland in 1939, he destroyed all records of his existence, then moved first to Sweden, then to Turkey, where he worked for Turkish Radio and began to set up his own private intelligence organisation. During the war, he sold information to both sides. After the defeat of Erwin Rommel, he decided to back the Allied war effort, and was awarded numerous medals by the Allied powers after the war's end. Blofeld then temporarily moved to South America before founding SPECTRE."