Wil was the daughter of unknown parents. The date and place of her birth have not been found.
She had three marriages/partners. Her first husband was G. H. van Dissel. They were married, but the date and place have not been found. Their only known child was Astrid Wilhelmina Cornelia van (1956-).
Her second husband was Heer van de Tier. They were married, but the date and place have not been found. Their two known children were Ron van de () and Peter van de ().
Her third husband was Peter Gieling. They were married, but the date and place have not been found. They had no known children.