H2O's EU5 Mod Workshop 中文

Ingeborg of Holstein

Ingeborg of Holstein (c. 1316–after 1349) was the daughter of Count Gerhard IV of Holstein-Plön and sister of Gerhard V. She married Count Conrad I of Oldenburg and was the mother of Counts Conrad II and Christian V, who succeeded their father in Oldenburg.

References

  1. de.wikipedia.org/wiki/Gerhard_IV._(Holstein-Plön)
  2. de.wikipedia.org/wiki/Konrad_I._(Oldenburg)