author
1855–1905
Best known for helping generations of Catholic students and teachers with clear, practical catechism texts, this priest-writer focused on making church teaching easier to understand. His books, especially on the Baltimore Catechism, stayed in use long after his death.

by Thomas L. Kinkead, Saint Roberto Francesco Romolo Bellarmino, J. (Januarius) De Concilio, Catholic Church. Plenary Council of Baltimore (3rd : 1884)
Thomas L. Kinkead was a Catholic priest and religious writer best remembered for An Explanation of the Baltimore Catechism of Christian Doctrine and related catechetical works. Records available during this search identify him as Rev. Thomas L. Kinkead and give his lifespan as 1855–1905.
His writing was aimed at Sunday-school teachers, advanced classes, and readers who wanted fuller explanations than a simple question-and-answer catechism could provide. That practical, instructional approach helped make his work a lasting part of Catholic religious education in the United States.
Some sources found in this search suggest he was born in Belfast and later served in New York, but I could not confirm a fuller biographical timeline from strong, detailed sources here. What is clear is that his name remains closely tied to classic Baltimore Catechism editions and explanations that continued to circulate widely after his lifetime.