6 moments

1. Traditional birthplace at Drepanon

   0246-01-01 · Drepanon (Helenopolis), Bithynia, Roman Empire (near Hersek, Yalova Province, Türkiye)

   Helena is traditionally placed at Drepanon in Bithynia, later called Helenopolis. The exact year and even the identification of the birthplace remain uncertain. Wikipedia dates her birth c. AD 246–248 and emphasizes that the birthplace is not certain; coordinates represent identified ancient Helenopolis/Hersek.

2. Birth of Constantine at Naissus

   0272-01-01 · Naissus, Moesia Superior, Roman Empire (Niš, Serbia)

   

   Helena was at Naissus when she gave birth to the future emperor Constantine, an event central to her later political and dynastic importance. The day is reported, but the birth year is uncertain; 272 is the article’s stated probable year.

3. Residence at the Palatium Sessorianum

   0317-01-01 · Palatium Sessorianum, Rome, Italy

   

   Helena lived at Rome’s Palatium Sessorianum after 312 and exercised imperial authority there as Constantine’s delegate; 317 is the securely dated year in this residence period when she received the title nobilissima femina. The source dates the title to 317 but bounds the Roman residence only as beginning after 312; coordinates represent the Sessorian complex near Santa Croce in Gerusalemme.

4. Eastern provincial tour

   0326-01-01 · Eastern provinces of the Roman Empire

   

   After Constantine’s vicennalia at Rome, Helena undertook an imperial tour through the eastern provinces. Modern scholarship characterizes the journey as both religiously significant and a possible political mission. The source does not provide a complete route; coordinates are a representative point for the broad, explicitly stated region.

5. Departure from Jerusalem

   0327-01-01 · Jerusalem, Syria Palaestina, Roman Empire

   

   Helena’s departure from Jerusalem marks the end of her documented eastern journey. Her Jerusalem visit became central to later traditions concerning Christian holy sites, though accounts of the True Cross are later and contested. Coordinates represent the Church of the Holy Sepulchre area, the principal documented locus of Helena’s Jerusalem activity; the quoted source establishes Jerusalem but not an exact site.

6. Death at Rome

   0330-01-01 · Rome, Italy

   

   Helena died at Rome, with Constantine at her side. Her death ended a career in which she had become an Augusta and a prominent member of Constantine’s imperial household. The year is approximate. Some modern scholarship instead dates her death to 328/329; the canonical Wikipedia article gives around 330.