Which was silas marner by vocation where did he work and to which collage did he belong?

Silas was a linen-weaver.

In the early years of this century, such a linen-weaver, named Silas Marner, worked at his vocation in a stone cottage that stood among the nutty hedgerows near the village of Raveloe, and not far from the edge of a deserted stone-pit.

Not sure what you mean by college?