Janusz was the son of Bolesław IV von Massow but his mother is unknown. The date and place of his birth have not been found.
He died about 1454. The place is not known.
Janusz von Massow |
Bolesław IV von Massow |
Bolesław III von Massow |
Janusz I von Massow |
+ | ||||
Danuta Anna of Lithuania |
+ | |||||||
Anna Ivanovna Holczanska |
| |||||||
| ||||||||
| | | ||||||
| ||||||||
| | |||||||
|
Event | Date | Details | Source | Multimedia | Notes |
---|---|---|---|---|---|
Death | ABT 1454 |
|