Von Grumbkow was born in Leimen, and originally played for SC Neuenheim in Germany, being part of the club's national championship-winning team in 2003 and 2004,[4] before joining New Zealand club Stoke RFC for the 2005 season.[2] From 2006 to 2009, he played for French club RC Orléans, a club with a number of German internationals in its ranks at the time. From 2009, he played in Italy's highest league, the Super 10 (now Top12), for Rugby Club I Cavalieri Prato.[2] At the end of the 2011–12 season he switched to the French second division side U.S. Dax.[5]