Topic: Nineteen century painting,sign by Alice St john(lower right)

I just acquire a nineteen century Oil on Canvas,it has a brass plate in the middle(we can read "Julia Rush Miller 1794-1854,Who Became the Wife of George Junkin D.D. LLD")this painting was sign by Alice St-John,lower right.This is very well done,this painting measured 20" x 24" with a gorgeous frame 31 3/4" x 26 3/4"this painting is from the third quarter of nineteen century, still in very good shape,Did someone hear about this artist name,i look on the web,i can't find any info on this.

Thanks for the help.