Born in or about 1840, Walter Douglas Somerset Campbell was the younger son of Walter Frederick Campbell of Islay, by his second wife, Katherine Isabella. He appears on the 1861, living with his widowed mother and his two sisters at Niddry Lodge, Kensington. The head of the household is his half-brother, the Gaelic scholar John Francis Campbell. At the time of the census, Walter Campbell was 20 years old; he was, apparently, and ensign in the Royal Navy.

From an album compiled by either the Campbells of Ardpatrick or by the Campbells of Islay themselves.