For Kathy Gatterdam, the definition of family business includes more than those in her family tree. As CEO of Columbus Coal & Lime Co., which has operated in Central Ohio for 127 years, Gatterdam's definition of family extends a little further than her own bloodline. "I find strength in all my families. Not just my personal family, but everybody that works here," she says. The company supplies brick, block, pavers, retaining walls and custom-made masonry products. Gatterdam, also the board president…