Euseb. in Vit Constant. 1. iv. c. 61, 62, 63. The legend of Constantine's baptism at Rome thirteen years before his death, was invented in the eighth century, as a proper motive for his donation. Such has been the gradual progress of knowledge, that a story, of which Cardinal Baronius (Annal. Ecclesiast. A.D. 324, No. 43-49) declared himself the unblushing advocate, is now feebly supported, even within the verge of the Vatican. See the Antiquitates Christianae, tom. ii. p. 232 — a work published with six approbations at Rome, in the year 1751, by Father Mamachi, a learned Dominican .