Bryan MacMahon is a retired teacher and independent researcher with a focus on topics related to Co. Kerry. A native of Ballyheigue, he published Ballyheigue in Arms: Portrait of a Kerry Parish, 1914-1923 in 2023. His book Faith and Fury: the Evangelical Campaign in Dingle and West Kerry, 1825-45 was published in 2021. The Great Famine in Tralee and North Kerry was published in 2017 and was awarded the Nilsson Heritage Prize at Listowel Writers Week.

Bryan's articles on a variety of topics have been published in History Ireland, The Kerry Magazine and the Journal of the Kerry Archaeological and Historical Society. He is a Council member of the Society.