 The vision of St Fursey and the development of purgatory (Fursey Pilgrims, 2007) 
Fursey Occasional Paper number 2
The Visio of Fursey is recognized to contain one of the earliest coherent expressions of the idea of purgatory, which would not reach its fullest form until some six hundred years after Fursey's death.In her lecture, Marilyn Dunn considers the concept of purgatory and the place of the Visio in its development.Guthlac of Crowland, a Saint for Middle England (Fursey Pilgrims, 2009) 
Fursey Occasional Paper number 3 
Guthlac of Crowland was a near contemporary of Fursey, dying in 714, as well as being located not too far distant from the area of Fursey's English ministry.