| Descent |
| Thomas Cassingham (Sr.) |
| Richard Cassingham |
| William Reeves Cassingham |
| Julia Isabel (Cassingham) Zastrow |
| Royal C. Zastrow |
| Richard Lawrence [Zastrow] Winiecki |
Richard Lawrence [Zastrow] Winiecki is the biological son of Royal C. Zastrow and June Edessa Ellis. He was born in 1941.
He married Carolyn Cawley.
Children of Richard Lawrence [Zastrow] Winiecki and Carolyn Cawley:
- Dan Winiecki
- David Winiecki