Hemma Welf von Altdorf was born circa 808 to Welf I. von Altdorf (-825) and Heilwig (780-826) and died 31 January 876 of unspecified causes. She married Louis the German (c806-876) .
Children
| Name | Birth | Death | Joined with |
| Hildegard (828-c856) | 828 | 856 | |
| Carloman of Bavaria (829-880) | 828 | 29 September 880 | Liutswind (?-?) |
| Irmgard of Chiemsee (c831-866) | 831 | 866 | |
| Gisela (?-?) | Berthold I von Schwaben (?-?) | ||
| Louis the Younger (830-882) | 830 | 20 January 882 | NN Luitgard von Sachsen (c845-885) |
| Bertha (?-877) | 877 | ||
| Charles the Fat (839-888) | 13 June 839 | 13 January 888 | Richardis of Swabia (c840-c895) |
Footnotes (including sources)
| ‡ General |
| Ω Birth |
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