Liutgard von Henneberg was born on an unknown date to Poppo VII. von Henneberg (-1245) and Elisabeth von Wildberg (c1187-1220) and died 14 June 1267 of unspecified causes. She married Johann I. zu Mecklenburg (c1211-1264) 1220 JL .
Children
| Name | Birth | Death | Joined with |
| Heinrich I. zu Mecklenburg (c1230-1302) | 1230 | 2 January 1302 | Anastasia von Pommern (c1245-1317) |
| Albrecht I. zu Mecklenburg (aft1230-1265) | 1230 | May 1265 | Tochter zu Werle (c1244-c1291) |
| Hermann zu Mecklenburg (?-?) | |||
| Elisabeth zu Mecklenburg (c1230-c1280) | 1230 | 1280 | Gerhard I. von Holstein-Itzehoe (1232-1290) |
| Nikolaus III. zu Mecklenburg (?-?) | |||
| Poppo zu Mecklenburg (?-bef1264) | |||
| Johann II. zu Mecklenburg (?-?) | |||
Footnotes (including sources)
| ‡ General |