Memorials | Columbus, OH | Thompson Plageman Memorials. Serving Columbus, OH for over 50 years, Thompson Plageman Memorials is a three generation family business that provides high quality, custom monuments, markers, urns, and more. We work closely with our customers to create truly one-of-a-kind tributes to your loved ones. Visit our showroom or call (614)-492-8472 today.. memorials, cemetery monuments, grave markers, custom cemetery marker, cremation monument, flat markers, slant markers, granite benches, cremation urns, urns, custom monuments, family memorials, single monument, double monument, gravestone, tombstone, custom gravestone