Over the last decades European societies have become more ethnically diverse. However, a more comprehensive understanding of the life course and population dynamics in migrant families is still lacking. Ignoring a large share of the population in studies on family and population dynamics is exclusive and does not reflect reality. My project is first of all innovative in providing a more comprehensive overview of individual life courses of migrants: events in different life domains are linked and full life trajectories are analysed and explained. I will focus not only on the causes but also study the consequences of life course decisions. The second project goal is to explain the effect of migration on intergenerational solidarity and family ties. The analyses will link different phases in the life course as well as different generations. Families of different migrant and native origin will be compared in these parts. Third, I will make unique comparisons between the life course trajectories in the countries of origin and settlement of migrants. Bringing in the perspective of the sending country is original and crucial for understanding to what extent life course choices are related to the integration process in the host society, or to a trend that also occurs in the country of origin. A final major novelty of this project is that different recent data sources are linked within each of the components of the project. The combination of data from the Gender and Generations Survey (GGS), The Integration of the Second Generation (TIES) survey, the PAIRFAM survey, the European Social Survey, the Demographic and Health Surveys and the census, allow for a more complete understanding of the life courses of migrants and population dynamics in migrant families.