Laurence Irving is the son of Henry Irving, the famous actor and theater owner who inspired one of Bram Stoker’s characters in Dracula (and for whom Bram Stoker worked). Laurence had a short life and tragic end, perishing in 1914 in a maritime disaster on the St. Lawrence River (an irony that I’m sure was lost on him). I’m guessing that in this photo he must have been in his 20s, so this would have been taken sometime in the 1890s.
Also fascinating is the photographers’ description of the studio address: 20 UPPER Baker Street, 20 doors north of Baker Street Station. Which puts it across the street more or less from 227 B Baker Street, the fictive home of Sherlock Holmes.
I have a photo of his father, Henry Irving, already in my collection: