Hi scarpi, You will have no trouble finding lots of information on Irish history on the web but be careful. As with all topics on the web the accuracy can vary wildly. For example,I've read that research on the incidence of various blood types has shown that the Irish are closest to the Iclanders. The reason being that when the Vikings settled Iceland they brought many Irish slaves with them. Is this true, has such research been done, and was that the result?
Good luck with the radio program.