ealdor-apostol, m.n: chief or prince of the apostles (traditional epithet for St Peter). (AY-ALL-dor-AH-poss-toll)
St Peter with a monk at his feet. Ælfwine’s Prayerbook. England (New Minster, Winchester), 1020s. British Library, Cotton MS Titus D XXVI, f. 19v. [blogs.bl.uk]