Adalbert III de Grandson sn de Grandson

Adalbert III de Grandson was born about 1030 in Neuchatel, Switzerland.¹   Adalbert III de Grandson's father was Adalbert II von Grandson sn de Grandson and his mother was Dietberga (de Grandeson).  His paternal grandfather was Lambert I sn de Grandson.  He was an only child.  He died in 1086.¹