Which Church Fathers were martyred?

I understand that Foxe's Book of Martyrs (first published in English in 1563) is an exhaustive account of Christian martyrs, both pre- and post-Reformation. However, at a daunting 1,570 pages in length, my need is for a more concise overview. Also, my assignment specifically focuses on the early Church Fathers. So far I've got Ignatius of Antioch (martyred circa A.D. 110), Justin Martyr (A.D. 165), Irenaeus of Lyon (circa A.D. 202) and Origen of Alexandra, who was persecuted, tortured, imprisoned and after his release, died A.D. 254. Eusebius of Caesarea fled persecution and witnessed the martyrdom of Christians (circa A.D. 300) and John Chrysotom died while in exile A.D. 407. No mention of them dying as martyrs, though. Is there a link to a credible source of information about the early Church Fathers who were martyrs?