Names, what can they tell us?

'Reg and Celia', they were here in the forest, enjoying a lovers picnic maybe? Dating graffiti is always a challenge and I'm constantly looking for clues to age. Reg and Celia aren't common names of my generation or later, so would it be too easy to assume that they predate me, say people born in the 1940's or 1950's? Assumptions continue, the letters are precisely cut, maybe Reg has a job in engineering, a craftsman or something, assuming of course, which I do, that it was he that cut them as men usually create love based graffiti in an attempt to court favour. I'll never know unless one of them sees this post and contacts me to tell the story behind their engraved names, now that would be trip!