Arnould was the son of Elembert de Marq and Adèle de Liques. The date and place of his birth have not been found.
His wife was Æline. They were married, but the date and place have not been found. Their only known child was Christine (c1140-1177).
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | seigneur d'Ardres | |||||
| Nobility Title | viscount de Merq |