The History of Ogham: The Celtic Tree Connection The History of Ogham: The Celtic Tree Connection IrishCentral has partnered with Ogham Art to give our readers a discount towards an everlasting gift this Father's Day by planting an Irish Heritage Tree. In partnership with: Facebook Addthis Colleen Berry Conway is the owner of Ogham Art alongside her husband Chris. She takes us through the history of the ancient Irish alphabet and her connection with the Irish Heritage Tree program. When we bought our home in 2005, we were given a housewarming gift by my in-laws: a copper plaque with fáilte - the Irish word for “welcome” - in Ogham, the first written form of the Primitive Irish language.