Engelbert ________ [101128] -----
d.1039
 
Luitgard de_Istria [100997] -----
m.ca.1030
wife of Engelbert
d. after 1051

|-- Richildis de_Lavant [101127]
|   wife of Siegfried
|    de_Spondheim
|   
    
    
    

Frederick I [101129] ------------
b. before 991
d. after 1019
 
________ ________ [100996] ------
wife of Frederick I

|-- Engelbert ________ [101128]
|   d.1039
|   
|   
|   
    

Hartwig ________ [101130] -------
 
Wichburg ________ [101133] ------
wife of Hartwig ________

|-- Frederick I [101129]
|   b. before 991
|   d. after 1019
    

Albuin de_Jaun [101131] ---------
d. after 940
 
Hildegarde ________ [101132] ----
wife of Albuin de_Jaun

|-- Hartwig ________ [101130]
|   
|   
|