In 2007 the President of the French Republic, Nicolas Sarkozy, was installed as the honorary canon of the Basilica of St. John Lateran. This honor was not bestowed upon President Sarkozy due to his personal merits or personal wealth and power, but solely because he is the French head of state. The first French head of state to receive such an honor was Henri IV in 1604. In gratitude for his conversion to Catholicism, Henri IV had made a substantial donation to the Chapter of canons of the basilica. According to 30Days:
...Specifically to manifest his recognition toward the Church of Rome, whose pardon had allowed this reconciliation, Henry IV made a notable donation to the Lateran Chapter in 1604. And one of the clauses of this donation established that the Chapter would celebrate a mass every year on the day of the King’s birthday (13 December) specifically for the prosperity of France.
Now times are changed, there has been no monarchy in France for more than a hundred and fifty years, but the mass of Saint Lucy continues to be celebrated punctually every year....