Saml Pepys Jnr (presumably British)

This was a nom de plume. The author is described as

RCC6240 A Diary of The Great War: From July 1914 to Dec 31 1915 (Pepys Jnr)

RCC6242 A Last Diary of the Great War. From July 1917 to the End of the War. (Pepys Jnr)

RCC6241 A Second Diary of the Great War: From Jan 1916 to June 1917 (Pepys Jnr)