Minangkabau customary law has always been quite open to be integrated with new elements. From the influences of Hinduism, Buddhism, and the colonial period, it is Islam that has spurred the lifestyle of the matrilineal community to date. The encounter creates the term ‘adat bersendi syarak, syarak bersendi kitabullah’, which clearly shows the marriage between the old elements and the new ones. It does not stop there, social change continues to occur in-line with the existence of globalization influence. In the continuing social change, the Minangkabau society still have the will to preserve its core elements. This research was conducted at Nagari Maninjau and Nagari Sungai Batang. Each population is a family group consisting a father, a mother, and at least one child aged 10-19 years. This study uses a simple quantitative method, the summation of 106 family sets of respondents, being further analyzed qualitatively. The pioneer in the effort of cultural preservation is the urban area, with a family configuration derived from Minang father+Minang mother and non-Minang father+Minang mother. Data shows that there is no significant role of an uncle in terms of cultural inheritance, because the other central role is acted by a mamak pusako.