Mathilde von Brandenburg was born 1296 to Hermann III. von Brandenburg (c1271-1308) and Anna von Habsburg (c1278-1327) and died 1323 of unspecified causes. She married Henry IV of Glogow (c1292-1342) 5 January 1310 JL .
Children
| Name | Birth | Death | Joined with |
| Hedwig of Zagan (c1316-1348) | |||
| Henry V of Zagan (c1319-c1369) | 1319 | 4 August 1369 | Anna of Płock (1324-1363) |
| Salome of Zagan (aft1320-c1359) | 1320 | 12 June 1359 | Heinrich II. Reuß von Plauen (bef1289-1350) |
| Agnes of Zagan (c1321-1362) | 1321 | 1362 | Leszek of Racibórz (c1292-1336) Louis I of Legnica (c1321-1398) |
Footnotes (including sources)
| ‡ General |