From Yahoo! Movies: Distant cousins of Thorin Oakenshield, these two doughty Northern Dwarves join the Company out of a sense of loyalty to their kin, and also because they have a substantial sum of money invested in the venture. Along with Bombur, Gloin is the only other married Dwarf in the Company (there being a shortage of female dwarves in general). His wife is an acclaimed beauty with a particularly fine beard. Gloin is the proud father of a young son, Gimli, who will go on to become part of the famous Fellowship of the Ring.
Analysis of the image is pending, meanwhile take a look at the growing collection! First Dori, Nori and Ori, and now Gloin & Oin.