Petro's 3 Generations Genogram is here. An eye-catching genogram has been shown here. Genograms contain a wealth of information on the families represented. First, they contain basic data found in family trees such as the name, gender, date of birth, and date of death of each individual. Additional data may include education, occupation, major life events, chronic illnesses, social behaviors, nature of family relationships, emotional relationships, and social relationships.