The family name is often spelt Pritchard.
Richard Prichard (b.1842) was the eldest son of Thomas Prichard (James Spooner's assistant). In 1871 he was employed as a Railway Foreman (probably with the FR). In 1881 he was described as an "Unemployed contractor" all the time living at the family home of Brithwernydd (between Minffordd & Penrhyndeudraeth). After that he cannot be traced until 1911 when he was living back at the family home aged 69 and describing himself as an Architect and Surveyor.