S. Baring-Gould, The Lives of the Saints, Volume 01…
“ The name is incorrect if we use the word "martyr" in its restricted sense as a witness unto death. "Hagiology" would be more suitable, as a martyrology includes the names of many Saints who were not martyrs. But the term "Martyrology" was given to this catalogue at an early age, when it was customary to commemorate only those who were properly martyrs, having suffered death in testimony to their faith; but it is not unsuitable if we regard as martyrs all those who by their lives have testified to the truth, as indeed we are justified in doing. ”
