Biography
Gerlach I. von Isenburg-Limburg, Graf von Isenburg in Limburg an der Lahn, was born circa 1233 to Heinrich I. von Isenburg (-1227) and Irmingard von Büdingen (c1233) . He married Imagine von Blieskastel (c1233-1298) 1251 JL .
Children
| Name | Birth | Death | Joined with |
| Johann I. von Isenburg-Limburg (c1252-1312) | 1252 | 29 September 1312 | Elisabeth von Geroldseck (c1268-) Oda von Ravensberg (c1255-1313) |
| Gerlach II. von Isenburg-Limburg (c1256) | |||
| Heinrich von Isenburg-Limburg (c1257-bef1285) | |||
| Agnes von Isenburg-Limburg (c1258-aft1317) | 1258 | 1317 | Heinrich I. von Westerburg (c1240-1288) |
| Imagina von Isenburg-Limburg (c1259-aft1313) | 1259 | 1313 | Adolph von Nassau (c1255-1298) |
Footnotes (including sources)
| ‡ General |