Ann Pewter, 74, from Tavistock, Devon, died at the King Harry Ferry crossing point on the River Fal on 20 March.

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The recent returnees are understood to have taken a considerable risk in the crossing of the Mereb river which forms the border at that point.

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Cormac Burke from the Ulster Museum said the place along the river where they were discovered is a well known crossing point and the Bann was a well known thoroughfare.

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