The article refers to a rose window, which I can't find on the church website (http://stpaulsec.org/facility-photos) and unfortunately no good photos of the other Tiffanys and Connick windows the article mentions.
She refers to medieval glass as having no paint at all, but Connick wrote at length about how the medieval glass artists used paint to modulate and intensify the effects of colored glass. At least, that was my understanding. Wrong?
don't believe everything written in this type of article. Most of these people quoted or the people writing are not experts.
"Tiffany departed from his father’s trade of jewelry-making to pursue a stained glass apprenticeship in Europe, she says.". I have never heard about Tiffany being a stained glass apprentice.
"Conneck Brothers"? Don't think so.
No medieval painted glass, not true.
"Tiffany fusing layers of glass", not to my knowledge
Tiffany 1910 only lists "Faith, Hope and Charity". Alastair Duncan visited the church (I guess in the 1970s?) and added three more entries in his 1980 version of the list. These did not include the rose window, and the church did not mention that in my correspondence with them. One of the Duncan entries didn't mention the theme and in fact corresponds with two windows (well, that's the way I would interpret this entry). And he got one of the memorial names wrong.
The other four windows:
Jones Memorial, Good Samaritan
Jones Memorial, Parable of the Talents
Foote Memorial, The Good Shepherd
Bissell Memorial, St. Paul Preaching at Athens
You can see photos of the Parable of the Talents and the Good Shepherd windows at:
You have to click on the church for the former. And the latter mentions the wrong name for the church, so don't be put off by that. This shows the signature for the Good Shepherd window, so that's bona fide. (Although it is one of those odd cases when the window was supposedly installed in 1898 but the signature says copyright 1894.)
There is a 1909 article about the St. Paul window being installed then and that says it is by Tiffany so that is bona fide as well. And the Parable of the Talents looks plausible.
I've had an email exchange with Gwen Cheney (quoted in that article) and she says that all five Tiffany windows are signed, that the Cutler rose window is by Connick, as are several other windows, and they also have two windows by Henry Sharp (from an earlier building). The St. Paul Tiffany window is actually shown in b+w in Duncan's 1980 book on p. 144 (I hadn't noticed that).