Branches is a rich looking theme is a wonderful option for a genealogy or family blog.
Essence is an advanced theme that is easy to use as a base to build your own theme.
Fliphoto is a clean and simple theme for photoblogging.
Sixhours is a classic and simple text-based theme.
Branches, as titled, its perfect choice for geneology related topics and themes. I like the header in this theme and the color combination is also very attractive. It looks more artistic among other popular themes. Second is the Fliphoto and its good choice for photo work blogs. All the three are good additions. Thanks