Hello I am travelling to Picinisco

Hello I am travelling to Picinisco in a few weeks.  My Father's family were originally from there although he was brought up in London!I have always wanted to visit it and as this year my Dad turned 80 i decided this is the year to do it with him too!We are staying in Rome and driving to Picinisco.  I wondered if anyone could recommend somewhere for a nice lunch on a Saturday in November?There will be 6 adults and 2 children, aged 12 and 15.Thank you.