My 3 Generation Genogram is a graphic representation of a family tree that displays detailed data on relationships among individuals of three different generations. The three-generation Genogram maps relationships — such as marriages, divorces, and children — that appear in a traditional family tree, as well as additional information between those relationships, including careers, education, disease, addiction, abuse, and emotional statuses. Instead of creating a genogram diagram from scratch, we use EdrawMax Online. The free Genogram maker offers free templates which you can fully customize as per your needs. My three-generation Genogram starts with Grandparents and includes aunts, uncles, parents, siblings, cousins, and more.