Recently Automattic launched three single column responsive WordPress themes best for personal weblogs. All themes are free and you can download them from WordPress.Org’s theme repository.
Ryu theme provides you a clutter layout which is good personal bloggers. Its readability is great with large font size and its single column layout perfectly displays large images. Other than this optional widgets are located at the top panel with social media links including a search field. The background color for an image post will automatically match the uploaded image in the post.
Sidekick is another single-column, widget-free child theme of Superhero. You can simply install it from WordPress admin are and it automatically brings its parent theme.
Ever After is a wedding blog-centric theme decorated with subtle but gorgeous textures and ornaments. Its wide single column layout is perfect for images and videos of your wedding or your wedding plan that you want to share with family, friends, or the world.