https://www.lacopts.org/news/his-eminence-metropolitan-serapion-celebrates-the-divine-liturgy-at-st-mary-magdalene-coptic-orthodox-church/
His Eminence Metropolitan Serapion Celebrates the Divine Liturgy at St. Mary Magdalene Coptic...
st mary magdalenehis eminencethe divinemetropolitanserapion
https://www.biblehub.com/library/pamphilius/church_history/chapter_xii_serapion_and_his_extant.htm
Serapion and his Extant Works.
serapionextantworks
https://www.ecatholic2000.com/eusebius/untitled-162.shtml
Chapter XII: Serapion, and the Writings Ascribed to Him — The Ecclesiastical History
Chapter XII: Serapion, and the Writings Ascribed to Him — from The Ecclesiastical History by Eusebius of Caesarea. Read the full text free online.
the writingsecclesiastical historychapterxiiserapion