In the case of what we may suppose to have been another and later journey in Connaught some genuine tradition of the line of advance appears to have been preserved. The bishop is said to have travelled westward through the southern corner of Leitrim to the banks of the Shannon. That river sweeps to the east below the town of the Rock,[123] and then, continuing its southward course, widens into a series of swellings, which, though small compared with the greater sheets of water into which it afterwards expands, are striking in their peculiar form. The stream flows through Lake Nanoge, Lake Tap, Lake Boderg, and Lake Bofin, but the special feature is the long arm of water which it flings south-westward, known as Lake Kilglass. The effect of this is that the river seems to bifurcate, and a promontory is formed by the true stream and Lake Bofin on the east, and by the blind water passage of Lake Kilglass on the west. It was to these river-lakes that Patrick bent his way, and the place of his crossing, though not designated by any name that is still used, is yet so clearly defined that we cannot mistake it, and can hardly doubt that the tradition is true. He first crossed over a river-swelling, and then found a second swelling in front of him, which he also passed. The only place in the course of the Shannon which satisfies these conditions is the place which has been described. When he was rowed across Lake Bofin, Patrick found himself on the water-girt promontory which is washed on the west by Lake Kilglass. In order to reach the district of Moyglass, which was his first destination, he took the shortest and most direct way, and crossed this second lake (perhaps near the modern Carnado Bridge) instead of making half-a-day’s journey round its shores. [Sidenote: IN EASTERN CONNAUGHT] On reaching the other bank he was in the plain of Glass,[124] and here again we find that the name of a large district has been preserved in the name of a small part. The little townland of Moyglass is adjacent to Lake Tap, but the ancient plain of Glass extended, we may be confident, from the banks of the river Shannon to the foot of the western hills, which screen the river here from the great plain of Roscommon. In this district the bishop established a Cell Mór or great church, and his visit gave the place its abiding name. It can be inferred that Patrick’s church was close to the village of Kilmore.