Sue Passmore is best known as a local and maritime historian, having published Welsh Sail, Farmers and Figureheads and The Streets of New Quay. She has also published the parish histories of Llannarth, Llanllwchaearn, Henfynw, Llanina, Llangrannog and Llandysiliogogo. As well as the family history of Peniarth, and the Owens of Penparc and Foel. Recently she has published two fiction stories for young people. The Holbeche Horse, and Boneys Men (which has as a backdrop the attempted Napoleonic invasion of Wales).