Lauren Burdette writes:

There is a tradition in Celtic Christianity of the peregrinatio, a pilgrim who wanders without destination. This vein of holy traveler does not occur in other strands of spirituality. It contrasts with the pilgrim, who sets out with a particular destination. The peregrinatio hears an invitation within her own soul to set out, not knowing where God might lead her. It is intriguing that this comes out of Celtic spirituality, for these are a people deeply connected to both the land and to God. There wasn’t a sense that they needed to travel to find God elsewhere. Rather, the journey was a way to deepen in relationship with the Lord, to practice complete trust and surrender.