The Devout Client of Mary by Paul Segneri, a translation of Il Devoto della Vergine (Original Edition) published in 1677.
This book could be called “True Devotion before De Montfort’s True Devotion.” It actually has a section called “The Motives Which May Help Us To Obtain True Devotion to the Blessed Virgin Mary.”
A brief example: If then I can shew, that the love, with which Almighty God regards the Blessed Virgin Mary, is inconceivably great, I shall prove, at the same time, that she deserves to be loved by us beyond all that can be expressed.