Daldis (Ancient Greek: Δάλδις, ἡ Δάλδις), was a town on the borders of ancient Lydia and Phrygia, a former bishopric, and is now a Latin Catholic titular see. It also minted coins in antiquity with the legend Δαλδιανων. It also bore the name Flaviocaesaria or Phlabiokaisareia, which is not attested among ancient authors but is reconstructed from epigraphic and other evidence.
The Ancient city of Daldis was located near Narlïkale in Asia Minor (modern Asian Turkey). It was in Lydia. Ramsay believed it was on the Meander River, near the towns of Apollonos-Hieron and Tripolis.
The mother of the ancient Greek philosopher and professional diviner Artemidorus was from Daldis.
The diocese was founded in early Roman times and sent delegates to many important councils. Bishops include:
- Paul, attendee at Council of Nicaea
- Theodore attendee at Third Council of Constantinople 680.
- John attended Second Council of Nicaea (787).
- Apiphanius attended the Photius Council (869–870)
- Titular Bishop Charles Weber (萬賓來), Divine Word Missionaries (S.V.D.) (1937.12.02 – 1946.04.11), Apostolic Vicar of the then Yizhoufu (December 2, 1937 – April 11, 1946), promoted suffragan Bishop of Yizhoufu (April 11, 1946 – August 7, 1970)
- Titular Bishop Henry Theophilus Klonowski (1947.05.10 – 1977.05.06), Auxiliary Bishop of Scranton (USA) (1947.05.10 – 1973.05.15)
- Ptolemy. The Geography. Vol. 5/2.
- Lund University. Digital Atlas of the Roman Empire.
- Richard Talbert, ed. (2000). Barrington Atlas of the Greek and Roman World. Princeton University Press. p. 56, and directory notes accompanying.
- Joseph Bingham, Origines Ecclesiasticae; Or the Antiquities of the Christian Church and Other Works: In Nine Volumes, Volume 3 (Straker, 1843)p106.
- Sir William Mitchell Ramsay, The Cities and Bishoprics of Phrygia: Being an Essay of the Local History of Phrygia from the Earliest Times to the Turkish Conquest, Volume 2 (Clarendon Press, 1897) p178-179.
- coins of Daldis.
- Richard Price, Michael Gaddis, The Acts of the Council of Chalcedon, Volume 1 (Liverpool University Press, 2005) p336.
- Michel Le Quien, Oriental Christanus, p892.