Diederik I van Wylich
1. Diederik I van Wylich was born in 1412 (son of Adolf II van Wylich and Hildegond von Hessen); died in 1476. Family/Spouse: Elisabeth van Bylandt. Elisabeth (daughter of Johan van Byland) was born in 1410; died in 1491. [Group Sheet] [Family Chart]
Children:- Margaretha van Wylich
 - Adolf III van Wylich was born in 1445; died in 1521.
 - Gertrud van Wylich was born in 1450; died in 1523.
 - Johan van Wylich was born in 1455; died on 3 Jul 1519.
 - Steven van Wylich was born in 1476; died in 1502.
 
2. Adolf II van Wylich was born in 1386 (son of Adolf I van Steenhuis and Beatrix van Wylich); died in 1428. Adolf + Hildegond von Hessen. Hildegond was born in 1390; died in 1430. [Group Sheet] [Family Chart]
3. Hildegond von Hessen was born in 1390; died in 1430. Children: 
- Johan van Wylich died in 1469.
 - Godfried van Wylich was born in 1410; died in 1486.
 - 1. Diederik I van Wylich was born in 1412; died in 1476.
 - Otto van Wylich was born in 1426; died in 1485.
 - Hendrick van Wylich
 
Generation: 3
4. Adolf I van Steenhuis was born in ~1356 (son of Godfried van Steenhuys and Odilia Schellart van Obbendorf). Adolf + Beatrix van Wylich. Beatrix (daughter of Hendrik van Wylich and Gertrude van Wisschel) was born in ~1360; and died. [Group Sheet] [Family Chart]
5. Beatrix van Wylich was born in ~1360 (daughter of Hendrik van Wylich and Gertrude van Wisschel); and died. Children: 
- 2. Adolf II van Wylich was born in 1386; died in 1428.
 - Rutgera van Steenhuis was born in 1390; died in 1465.
 
Generation: 4
8. Godfried van Steenhuys (son of Gerard van Steenhuys and Walburga van Loo); and died. Godfried + Odilia Schellart van Obbendorf. Odilia and died. [Group Sheet] [Family Chart]
9. Odilia Schellart van Obbendorf and died. Children: 
- Godfried von Steenhuys and died.
 - 4. Adolf I van Steenhuis was born in ~1356.
 
10. Hendrik van Wylich died before 1400. Hendrik + Gertrude van Wisschel. [Group Sheet] [Family Chart]
11. Gertrude van Wisschel (daughter of Jordan van Wisschel and Margarethe N.N.). Children: 
- 5. Beatrix van Wylich was born in ~1360; and died.
 
Generation: 5
16. Gerard van Steenhuys (son of Theodore van Steenhuys and Elisabet van Our); and died. Gerard + Walburga van Loo. Walburga and died. [Group Sheet] [Family Chart]
17. Walburga van Loo and died. Children: 
- Biltrudis Bitter von Steynhus was born in ~1320; and died.
 - 8. Godfried van Steenhuys and died.
 
22. Jordan van Wisschel (son of Everhard van Wisschel). Jordan + Margarethe N.N.. [Group Sheet] [Family Chart]
23. Margarethe N.N. Children: 
Generation: 6
32. Theodore van Steenhuys (son of Gerard van Steenhuys and Sophie van Ossenberg); died after 1246. Theodore + Elisabet van Our. Elisabet and died. [Group Sheet] [Family Chart]
33. Elisabet van Our and died. Children: 
- 16. Gerard van Steenhuys and died.
 
44. Everhard van Wisschel (son of N.N. van Wisschel); died in 1370. Children: 
- 22. Jordan van Wisschel
 - Willem van Wisschel was born in ~1320; died before 1385.
 
Generation: 7
64. Gerard van Steenhuys (son of Godfried van Steenhuys and Mechteld van Rees); died before 1158. Gerard + Sophie van Ossenberg. Sophie died in ~1170. [Group Sheet] [Family Chart]
65. Sophie van Ossenberg died in ~1170. Children: 
- 32. Theodore van Steenhuys died after 1246.
 
88. N.N. van Wisschel Children: 
- Dietrich van Wisschel
 - Arnt van Wisschel
 - 44. Everhard van Wisschel died in 1370.
 
Generation: 8
128. Godfried van Steenhuys was born in ~1050 (son of Theodoric van der Horst); and died. Godfried + Mechteld van Rees. Mechteld and died. [Group Sheet] [Family Chart]
129. Mechteld van Rees and died. Children: 
- Godfried van Steenhuys died before 1158.
 - 64. Gerard van Steenhuys died before 1158.
 - Adeile van Steenhuys
 
Generation: 9
256. Theodoric van der Horst and died. Children: 
- 128. Godfried van Steenhuys was born in ~1050; and died.