Irmgard van Gelre was born on an unknown date to Otto I van Gelre (aft1145-1207) and Richarde von Wittelsbach (1173-1231) and died after 1230 of unspecified causes. She married Adolf I. von der Mark (c1194-1249) .
Children
| Name | Birth | Death | Joined with |
| Eberhard von Altena (-1241) | |||
| Engelbert I. von der Mark (-1277) | 1225 | 7 April 1277 Burg Bredevort | Kunigunde von Blieskastel (-) Elisabeth von Heinsberg (-) |
| Otto von Altena (-c1265) | |||
| Gerhard von der Mark (1220-1272) | |||
| Richarda von Altena (-1270) | 1270 | Otto I van Dale (-1232) | |
| Adelheid von Altena (-) | |||
| Tochter von Altena (-) | |||
Siblings
| Name | Birth | Death | Joined with |
| Aleid van Gelre (1187-1218) | 1187 | 1218 | Willem I van Holland (c1165-1223) |
| Gerard IV van Zutphen en van Gelre (c1185-1229) | 1185 | 1229 | Margarete van Brabant (1192-1231) |
| Otto van Gelre (1195-1215) | |||
| Lodewijk van Gelre (-1217) | |||
| Machteld van Gelre (1190-1247) | 1190 | 1247 | Heinrich II. von Nassau (1190-c1251) |
| Irmgard van Gelre (-aft1230) | 1230 | Adolf I. von der Mark (c1194-1249) | |
| Hendrik van Gelre (-1198) | |||
| Margaretha van Gelre (-1264) | |||
Footnotes (including sources)