(click pics for full resolution)
The first pic in this post is another non-tiling Twitter background; set you background color to white. The second is a desktop background.
Number 58, as seen in both the lighthouse and the cave, corresponds to the name Burke. And since I'm pretty sure Jacob didn't mean Edmund Burke, it's a safe bet that his ex-wife, our dear Juliet, was a candidate. Behind her in these backgrounds is the flower given to her by James during their Dharma days.