6. 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 .