The naturalist, in his letters and journals, made frequent allusions to his age, but, as his granddaughter remarked, with one exception, no two agree; hence, his granddaughter concluded that he might "have been born anywhere from 1772 to 1783." In the face of such uncertainty she adopted the traditional date of May 5, 1780, adding that the true one was no doubt earlier. Audubon was thus five years younger than his biographers supposed, and twenty-one years were added to the age of his father, who actually lived to be only seventy-four years old, while his son died in his sixty-seventh year. Wherever there is mystery there tradition is certain to raise its head, and though the naturalist carried his "enigma" to the grave, others, building upon his story, have fixed upon the very house in Louisiana in which he is said to have been born. Indeed, advocates of more than one house in that state as the probable scene of Audubon's nativity have arisen in recent times. We are obliged, therefore, to examine somewhat farther the now universally received but thoroughly erroneous idea that John James Audubon was a native of Louisiana at a time when that Commonwealth was part of a province of France. Upholding a tradition of rather recent growth, Audubon's granddaughter has expressed the belief that the naturalist was born in a house belonging to the famous Philippe de Marigny and known as "Fontainebleau." This was a sugar plantation on the north side of Lake Ponchartrain, three miles east of what is now the village of Mandeville and twenty-five miles due north of New Orleans. Pierre Enguerrand Philippe de Mandeville, Ecuyer Sieur de Marigny,[57] at one time owner of vast estates in and about New Orleans, was born in that city in 1750, and served as its alcade or mayor for two years. A lavish dispenser of hospitality, in 1798 he entertained in great state the Duke of Orleans, later known as Louis Philippe of France, together with his two brothers who accompanied him. He died at New Orleans, leaving five sons, of whom the third, Bernard Marigny, later became the owner of "Fontainebleau," which it has been mistakenly assumed was inherited from his father. At the time of the Duke of Orleans' visit just mentioned Jean Audubon had been out of the country nine years; there is no evidence of his ever having owned property at New Orleans, or ever having sustained any relations with the Marigny family.