Ghiliam married Maeijken Stevens Pietersdr on 17 Oct 1564 in Onze-Lieve-Vrouwekerk, Antwerp, Antwerpen, Belgium. Maeijken (daughter of Steven Pieters) was born about 1544 in of Antwerp, Antwerpen, Belgium; died before 28 Aug 1606. [Group Sheet] [Family Chart]

1. Guilliame (Wihelmus) Provoost was born about 1572 in Antwerpen, Antwerpen, Belgium; was christened on 12 Jan 1572 in Antwerp, Antwerpen, Belgium; died before 18 Jun 1641.
2. Anna Provoost was born about 1566; was christened on 1 Jun 1566 in Antwerp, Antwerpen, Belgium.
3. Margareta Provoost was born about 1567; was christened on 18 Dec 1567 in Antwerp, Antwerpen, Belgium.
4. Margareta Provoost was born about 1569; was christened on 10 Mar 1569 in Antwerp, Antwerpen, Belgium.
5. Katherina Provoost was born about 1570; was christened on 7 Jul 1570 in Antwerp, Antwerpen, Belgium.
6. Sara Provoost was born about 1573; was christened on 7 Aug 1573 in Antwerp, Antwerpen, Belgium.
7. Esther Provoost was born about 1574; was christened on 13 Sep 1574 in Antwerp, Antwerpen, Belgium.
8. Adam Provoost was born about 1575; was christened on 14 Aug 1575 in Antwerp, Antwerpen, Belgium.

Ghiliam married Maria Karman in Jun 1556 in St. Walburgis' Church, Antwerp, Antwerpen, Belgium. Maria was born about 1536 in of Antwerp, Antwerpen, Belgium; died before Oct 1564. [Group Sheet] [Family Chart]

1. Maijcken Provoost was born about 1557 in Antwerp, Antwerpen, Belgium; died on 5 Sep 1584 in Amsterdam, Noord Holland, Netherlands.
2. Elijsabeth Provoost was born about 1559 in Antwerp, Antwerpen, Belgium; died before 28 Aug 1606.