After studying at Edinburgh, in 1619 Alexander had moved to teach at the protestant college in Sedan in France, where he took his D.D. degree in 1628 and married the daughter of a French pastor in 1631.
After studying at Edinburgh, in 1619 Alexander had moved to teach at the protestant academy in Sedan in France, the home (since 1611) of the banished Scottish presbyterian spokesman Andrew Melville. There Alexander took his D.D. degree in 1628 and married the daughter of a French pastor in 1631.