Well, then, how about:
Twenty years after being forced to watch his lover's execution and then sentenced for life to prison for a crime he didn't commit, a farmer in 16th century Iceland returns to avenge her death and exonerate his name.
I don't mention that he's shipped off to Denmark because I think the execution conveys a more powerful emotional punch. In fact, I suggest this version has a one-two-three emotional punch: he 1] witnesses the execution of his lover; 2] gets a life sentence; 3] for a crime he didn't commit.
Logline legalists will, no doubt, throw a red flag on my play for giving the protagonist a dual objective goal. Although a dues paying legalist myself, I believe there are (rare) exceptions to every rule. I think an exception is warranted, certainly permissible, in this case.
Ditto with the 30 word maximum. That's certainly the ideal and close to the statistical average. But, again, there are rare exceptions, justifiable outliers to the statistical average. For me, the redline for length is 40 words. I haven't met a verbose logline yet that couldn't be boiled down to 40 words or less.
This one comes in at 38 words.