Angus Lindsay discovered a log of letters that prove his grandfather wasn't just a railway station master, but also an anarchist.
The logs were written in shorthand as a form of code because of the anarchist nature of the letters.
Mr Lindsay has recently had them translated to discover more about his heritage.
He said: "I have never really had much recollection of him and my own father was very conservative, so I was surprised to learn that my grandfather was an anarchist.
"I had no idea." [Link]