Denmark's Crown Princess Mary gave birth early Saturday to a boy who is second in line to the throne of Europe's oldest reigning monarchy, the royal palace said. Australian-born Mary gave birth to the boy at 1:57 a.m. Saturday at the Copenhagen University Hospital, the palace said. Both mother and child were doing fine, it said. The boy was 51 centimeters and weighed 3.5 kilograms, Per Thornit, head of Crown Prince Frederik's court said in the statement. His name is likely to be Christian. Since Christian II, who died in 1559, Danish kings have alternately carried the name Christian or Frederik. Mary married Crown Prince Frederik, Queen Margrethe's eldest son, in a lavish ceremony in May 2004 at Copenhagen's Lutheran Cathedral. The couple met in a bar during the 2000 Olympics in Sydney.