This week, An Post launched a new commemorative stamp in honour of Erskine Childers - not the former President, but his father, Robert.

Born in England, and a veteran of the British armed forces in several campaigns, Robert Erskine Childers was an unlikely Irish revolutionary.

The circumstances of his death, a century ago in the week coming, caused great controversy but his family's search for peace in the aftermath is an inspiring story.

Donal Fallon joins Gavan for another episode of Hidden Histories to discuss.