Judith Wilt on the fictional Casaubon of Middlemarch —
Related material from Wikipedia:
The non -fictional Casaubon and Ultramontanism.
From the former:
"Neither side could understand that Casaubon's reading of
the church fathers led him to adopt an intermediate position
between Genevan Calvinism and Ultramontanism."
See as well Wilt on "Storytelling and Catholicism"
(Boston College syllabus, Spring 2016), and Enda's Game
(Log24, April 5, 2016).