You could get three months of free train travel - if you have one specific surname
![You could get three months of free train travel - if you have one specific surname](https://i2-prod.mirror.co.uk/news/technology-science/article32179966.ece/ALTERNATES/s615/0_Richard-Trevithick-credit-Ancestry.jpg)
Today marks 220 years of the world's first journey of the steam-powered locomotive, designed by Richard Trevithick - and a train ticketing app is on the hunt for his descendants