Established in 2010, the Doris Duke Fellowships for the Promotion of Child Well-Being focused on two core ideas: that learning is best accomplished in interdisciplinary groups and that carefully crafted research can improve public policy and practice. The final cohort was selected in 2018. Since then, a fellow-led transition has begun to expand the network to other emerging scholars and researchers. The Child Well-Being Research Network (CWRN) launched in 2021, with a central focus on improving diversity, equity, inclusion, and justice in the child well-being research field. Network activities include a mentoring program, writing retreats, learning and networking activities, support for strategic research translation and dissemination, and leadership development opportunities for network members. In the midst of transforming from the Doris Duke Fellowships into the Child Well-Being Research Network (CWRN), an equity study was conducted to assess how staff members, national advisory board members, academic and policy mentors, and Doris Duke Fellows experienced diversity, equity, and inclusion (DEI) during their participation in the Doris Duke Fellowships. This research brief focuses on two themes that emerged: the importance of social support and feeling a sense of belonging within a fellowships program. These concepts are inexplicitly linked to DEI. This brief discusses how all of these principles contribute to the fellowships' culture, the engagement of fellows, and the strength of the network in advancing the child well-being field.