The history of Château Phélan Ségur is linked to a young Irishman, Bernard Phelan, a wine broker, who left his native land at the end of the 18th century to settle in Bordeaux. In 1805, he acquired the Clos de Garamey located in Saint Estèphe and completed his first acquisition with the purchase of the Ségur de Cabanac estate in 1810. Upon his death, Château Ségur de Garamey was passed on to his son who devoted his life to raising the reputation and quality of the wines produced.

The Château changed owners several times afterwards, and became the property of Xavier Gardinier in 1985. Xavier Gardinier runs the property with his sons and has undertaken restoration work to give the property the lustre of its past. After more than thirty years at the head of the property, the Gardinier family passed the reins of the estate to Philippe Van de Vyvere. This great wine lover fulfills one of his dearest dreams by taking over this prestigious vineyard.