How does the story of the Cass family blend into Silas Marner?

On Chapter 3 the story of the Cass clan comes to play in
the story of Silas Marner when they introduce them and their roots. We know that they
are a well-known clan who once enjoyed the pleasures of wealth and a good name, and that
they are the proprietors of the Red House, which is considered in Raveloe as a place of
high distinction within the parameters of the
townsfolk.

The introduction of the Cass clan is necessary
to the novel because it shows us that the Class clan has several weaknesses that
actually may foreshadow an important crossing into the path of Silas
Marner.

Among the weaknesses of the Cass clan are the
brothers Godfrey and Dunsey. Godfrey, who needs desperately to marry for money,
erroneously married a drug-addicted woman and hides it from his father who would kill
him if he found out. Dunsley is money hungry and evil. We also know that Silas is hiding
gold and that he is alone and quite vulnerable for people of this
nature.

Hence, by letting us understand in full the nature
of the Cass clan is how Elliot introduces their storyline into
Silas's.