Jim Carroll wrote: Stanron
A little more than that unless you disregard the likelihood of people making songs to record everyday events, experiences, emotions and aspirations

May I refer you to my third paragraph.

"It has also been a vehicle for creative people to comment on current society and some of that will, almost inevitably, eventually attain the 'old songs' and old tunes' status.
"

Woody Guthrie did this, I'm not sure about Tom Lehrer, McColl did it retrospectively as did Eric Bogle. Many 'Singer Songwriters' put themselves forward and only time will tell who gets to last a long time. The famine, and also the Scottish clearances were such traumatic events it would be surprising if no songs survived. Time, and work such as yours, allows the cream to rise to the surface.