[John Locke]

By the way, this all took place around the year 1900.

Actually, in 1884. The Prayer was published on 25 September 1888:

SANCTE Michael Archangele, defende nos in proelio, contra nequitiam et insidias diaboli esto praesidium. Imperet illi Deus, supplices deprecamur: tuque, Princeps militiae coelestis, Satanam aliosque spiritus malignos, qui ad perditionem animarum pervagantur in mundo, divina virtute, in infernum detrude. Amen.

[fortitude]

Actually, in 1884. The Prayer was published on 25 September 1888:

Thanks for posting the correct date! Satan has had his hundred years and then some. It is clearly evident in the "goings on" of Cardinals and Bishops.

One consolation, we know that Mary's Immaculate Heart will win out. Pray the Rosary.