Indiana University-Purdue University Indianapolis (IUPUI) / This dissertation examines perceptions of purpose in family foundations and the impact of differences in those perceptions on family foundation board composition/function and on grant making activities. One of the primary decisions facing the donor who creates a private foundation relates to governance. Here, the donor arguably faces a deeply personal choice: to what extent should the donor’s family be involved? Related to this choice is the question of the degree of focus on the mission-related aspects of the organization or the family-related aspects of the organization. This dissertation explores whether family foundation trustees view family purposes and social impact purposes as meaningful for the foundation they represent and whether trustees differ with regard to the degree to which they emphasize one or the other. If family foundation trustees do meaningfully differ in this regard, what difference does an emphasis on family or social impact purposes make on board composition, grant making focus and stability, similarity to one’s peers, and other factors? Through a combination of survey, interview, and review of publicly available material, this dissertation explores this question for a sample of family foundation trustees in two Midwestern states.