It is said that start-ups are born with the support of one or more of the so-called 4 "F" (Family, Friends, Funds and Fools). Entrepreneurship by members of the same family (siblings, cousins, married couples or ascendants/descendants) is a very common phenomenon, but little analyzed and understood. People often talk about the idiosyncrasy of the family business in established companies, already in processes close to succession in management, or even in second and successive family generations. But what is so special about embarking on a new business venture with other family members? What does it bring and what does it mean to work with family members in the initial stages of a business project? At this breakfast we will learn about the experience of two young, technology-based companies founded by members of the same family: Aerox and VisualNAcert. Raúl Cortés (Aerox) and Mercedes Iborra (VisualNACert) will tell us about their entrepreneurial experience with their brother and sister, respectively. Two cases of members of business families and entrepreneurs, materialized in two new companies that are showing excellent results and great growth prospects.