Hi!
I think we have a connection!
I've recently found out that my ggrandfather wasn't a Curran as we have always thought but a Schultz.
We think he's descended from your Charles and also is a brother of the twins Rose and Lily, whose descendants I've recently connected with.
My mother and I are planning a trip to Brainerd in April to research and would love to hear from you with any info you might have!
Rachel