Is that true? I know it's a Roman Catholic church, but it describes him as a pastor, not a priest. I am not a Catholic, so I don't know what a pastor is in the context of Roman Catholicism or whether pastors have to take a vow of celibacy.
A pastor is a priest who pastors the flock at that particular parish. IOW, he's in charge.
Protestant ministers who convert to Catholicism have been allowed to remain married, and of course a widower could become a priest, but Fr. Pfleger was born Catholic so I assume the children were adopted.
I have never heard of a lay person being called pastor in a Roman Catholic church.
I read it again to make sure it wasn't Greek Catholic. The greek catholics do marry.