Agnes von Altena was born circa 1184 to Arnold von Altena (c1150-1209) and Mechtild van Holland (c1166-c1223) and died circa 1231 of unspecified causes. She married Christian II. von Oldenburg (c1180-1233) .
Children
| Name | Birth | Death | Joined with |
| Otto von Oldenburg (?-c1280) | |||
| Johann I. von Oldenburg (c1204-c1270) | 1204 Schloss Oldenburg, Oldenburg, Lower Saxony, Germany | 1270 | Richza von Hoya (c1240-c1287) |
Footnotes (including sources)
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