Helmhold III, Count of Schwerin (died 1295) was a German nobleman. He was a son of Count Gunzelin III of Schwerin-Boizenburg and Margaret of Mecklenburg. Helmhold III was the ruling Count of Schwerin-Neustadt and Marnitz from 1274 until his death.
Marriages and issue
Helmold married twice. His first wife was Mathilda (some sources call her Margaret; d. 1265), a daughter of Albert I, Duke of Saxony. Together, they had three children: Gunzelin V Henry III Margaret, a nun in Zarrenthin Abbey
After Mathilda's death, Helmold married Margaret, the daughter of Eric I, Duke of Schleswig. This marriage remained childless.
References
Georg Christian Friedrich Lisch: Zur Genealogie der Grafen von Schwerin und über den Verlauf der Grafschaft Schwerin, in: Jahrbücher des Vereins für Mecklenburgische Geschichte und Altertumskunde, vol. 15, essay 2, p. 23-42, Schwerin, 1850, Online Friedrich Wigger: Ueber die Stammtafel der alten Grafen von Schwerin, in: Jahrbücher des Vereins für Mecklenburgische Geschichte und Altertumskunde, vol. 34, essay 3, p. 55-140, Schwerin, 1869, Online