Henry II, Duke of Brunswick-Grubenhagen

Henry II, Duke of Brunswick-Lüneburg, (before 1296 – after 1351), also called de Graecia ("of Greece"), was the eldest son of Henry I, Duke of Brunswick-Lüneburg and Agnes of Meissen.

On their father's death in 1322, his sons agreed to rule the Principality of Grubenhagen jointly; but they finally divided up the territory, and Henry did not receive a part, and instead took over the administration of the brothers' joint property.

Henry continued to travel to Greece and Constantinople, visiting his brother-in-law Emperor Andronikos III Palaiologos, and on to Jerusalem.

Those of his sons who did not join the church obtained careers in southern European kingdoms; most notably Otto, who married Queen Joanna I of Naples.

They had the following children: Secondly, Henry married Heloise (aka Helwig or Helvis; died 1347/48), daughter of Philip of Ibelin, Seneschal of Cyprus.