The fourth-century Byzantine writer, Ammianus Marcellinus, drawing on reports from the first century B.C., tells us that the Celts (or Gauls, as the Romans called them) were fastidious, fair, and fierce:
The Gauls are all exceedingly careful of cleanliness and neatness, nor in all the country… could any man or woman, however poor, be seen either dirty or ragged.
Nearly all… are of a lofty stature, fair and of ruddy complexion: terrible from the sternness of their eyes, very quarrelsome, and of great pride and insolence. A whole troop of foreigners would not be able to withstand a single Gaul if he called his wife to his assistance, who is usually very strong and with blue eyes…