Thanks for your contributions on this query.

Going back to Brown's 1881 directory on Manxnotebook this morning I thought I'd note everyone listed at 'Glen Wyllan' and came across Kissack, Thomas, miller, Glen Wyllan. This in addition to: Corjeag, William H., miller, Kerroocruin Mills. The plot thickens.

On a separate point - I wonder if the collapse of the mill into the sea in 1950 was reported in the local paper and if so did it cover any of its history.