Thank you all for looking this all up....
After Sinann mentioned the Ras Tailteann, we went straight to google and found that site. It is a fascinating site, Eddie had spoken about riding stages in the North where bottles and insults were thrown at them, a story which seems to be confirmed there.
It’s entirely possible that he did ride for Roundwood, he rode for many teams apparently.
His specialty was climbing, probably because he grew up in the Wicklow mountains.