I describe my ongoing lyrics writing projects. Where I get my ideas, how I match my words with other people's music, which little helpers I use...
My ideas so far suggest a particular order for the verses:
1. traces the Romans left - past
2. traces on the internet (Facebook, blogs ...) - present
3. children (descendants) - future
This would lead to this song structure: verse - chorus - verse - chorus - verse - chorus
(also called the AB structure).
Content-wise the song would become what I call an 'episodical' song, i.e. a song that does not tell one particular story or describe a particular situation or mood. Instead, it tells three different stories that deal with a similar basic concept, in this case with "leaving traces".
Adding another verse at the beginning (so the structure would become 'verse - verse - chorus...') does not work well with such 'episodical' lyrics because listeners then would expect a continuous story. To make 'episodical' lyrics work the verses should be distinctly separated.
If or how a bridge makes sense will depend on the chorus(es). I think I'm going to leave it at the AB form.