This headstone is situated in Oslo, Norway. Adolph de Lemos was born in Hamburg in 1848 and died in Kristiania (now Oslo) in 1900. From what I can see, his father's name was David -- which also fits with the name of his oldest son being David de Lemos.I have written a short article on Adolph de Lemos with the information I have thus far:https://lokalhistoriewiki.no/index.php/Adolph_de_Lemos_(1848–1900)The article is in Norwegian, but you should get the main points if you run it through, e.g., Google Translate.I would be grateful for any information/pointers anyone might have about his family/ancestors in Hamburg and possibly also elsewhere.