Gerhardt was born about 1280, the son of unknown parents. The place is not known.
His wife was Sophia von Heinsberg-Löwenberg. They were married, but the date and place have not been found. Their only known child was Agnes (c1356-c1385).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1280 |
|