Which preposition to use with fenians

of Occurrences 2%

Why "Lady Macbeth" should proclaim her deadly purpose at the top of her lungs is quite incomprehensible, except upon the theory that stage traditions have confounded the Scotch with the Irish, and that the "Macbeths" husband and wifebeing the typical Fenians of the period, were accustomed to roar their secrets to the listening world.

in Occurrences 1%

I was in a house where some of the officers used to be staying, and in the daytime I would be walking after the soldiers' band, and at night I'd be going down to the end of the garden watching a soldier, with his red coat on him, drilling the Fenians in the field behind the house.

Which preposition to use with  fenians