Abraham Koorenhoff (1844-1917) worked in Leiden and Oegstgeest as photographer between 1867 and 1917. His address in the Muskadelsteeg/Gerecht 5 is linked with him for the period 1892-1893.The young man portrayed here is in his 20s which would give a date of birth around 1870.From the Van den Akker family photograph album.