The URL: http//:digital.library.pitt.edu/p/pittext/ is the home page for the full-text collection of books on historic Pittsburgh that can be viewed online. One is a two-volume set of the History of Allegheny County, published in 1889. Absolutely filled with great information - sections on religion, churches, etc. Many of the early pastors are named. There are lots of other books, too. Well indexed, searchable, etc. You may find a lead to the church records you need. Bettie