What's the name of this movie?

I am trying to remember the name of a movie and i have nothing to go on, other than that it was a movie about a boy who knew his father only through letters about his (the father’s noble deeds, etc), that we later find out that the mother has been writing ever since the father left, years before. I think that its set either in England, or Ireland or Scotland maybe.. but again not sure. I think that this movie is relatively recent, also (like, last few years or so). any help would be appreciated! :)