Born to Frederic May and Valentine (Van der Vennet) May in Elisabethville, Congo.
Graduates Saint-Boniface High School in Brussels, Belgium.
Earns a Bachelor of Arts, cum laude, in modern history from the Catholic University of Louvain.
Serves as the president of the Olivaint Conference of Belgium in Brussels, Belgium.
Earns a graduate diploma in demography from Catholic University of Louvain.
Marries Anne Marie Legrand on October 23.
Earns a Master of Arts in demography, magna cum laude, from Catholic University of Louvain.
Immigrates to the United States.
Earns a Doctor of Philosophy in demography, summa cum laude, from the Université René Descartes – Paris V Sorbonne.
Is the senior population specialist (open-ended) for the Africa Region at The World Bank in Washington, D.C. until 2008.
Is the lead population specialist (open-ended) for the Africa Region at The World Bank in Washington, D.C. until 2012.
Teaches as an adjunct professor at Georgetown University until 2019.
Is a visiting fellow at the Center for Global Development (CGD) in Washington, D.C.
Is a visiting scholar with the Population Reference Bureau (PRB) in Washington, D.C. until 2017.
Becomes a member of the Scientific Advisory Council of the Berlin Institute for Population and Development in Berlin, Germany.
Becomes a member of the Scientific Advisory Council, POPDEVINTER, in Paris, France.
Becomes a senior fellow at The Population Institute in Washington, D.C. and maintains this role.
Becomes a research professor at George Mason University in Arlington, VA and maintains this role.