1. Folkert Annes Fennema , son of Anne Folkerts and Greitje Benediktus , was born on 2 Feb 1725 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, was christened on 17 Feb 1725 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, and died on 1 Jul 1812 in Eastermar Tietjerksteradeel Friesland Netherlands, at age 87.

Folkert married Hijlkjen Wolters Kroon , daughter of Wouter Melles and Doetje Jacobs , in 1763 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands. Hijlkjen was born on 16 Dec 1738 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, christened on 4 Jan 1739 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, and died on 1 Apr 1809 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, at age 70. Other names for Hijlkjen were Hielkjen Wolters de Kroon, and Hylkjen Wolters de Kroon.

Children from this marriage were:

+ 2 F    i. Grietje Folkerts Fennema was born on 27 Sep 1764 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, was christened on 14 Oct 1764 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, and died on 22 Apr 1819 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, at age 54.

   3 M    ii. Anne Folkerts Fennema was born on 8 Jan 1766 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, was christened on 23 Feb 1766 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, and died on 7 Mar 1830 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, at age 64.

He never married.

+ 4 M    iii. Wolter Folkerts Fennema was born on 1 Sep 1767 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, was christened on 13 Sep 1767 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, and died between 1798-1800 in Eastermar Tietjerksteradeel Friesland Netherlands.

+ 5 M    iv. Sijtze Folkerts Fennema was born on 18 Feb 1770 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, was christened on 18 Mar 1770 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, and died in Jun 1806 in Droegeham Achtkarspelen Friesland Netherlands, at age 36.

+ 6 M    v. Folke Folkerts Fennema was born on 26 Apr 1772 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, was christened on 17 May 1772 in Garijp (Garyp) Tietjerksteradeel Friesland Netherlands, and died on 7 Mar 1847 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, at age 74.

+ 7 M    vi. Melle Folkerts Fennema was born on 29 Oct 1774 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, was christened on 13 Nov 1774 in Garijp (Garyp) Tietjerksteradeel Friesland Netherlands, and died on 21 Mar 1832 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, at age 57.

   8 M    vii. Binne Folkerts Fennema was born on 17 Mar 1778 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, was christened on 5 Apr 1778 in Garijp (Garyp) Tietjerksteradeel Friesland Netherlands, and died before 1811 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands.

+ 9 M    viii. Tjipke Folkerts Fennema was born on 12 Sep 1785 in Sumar (Suameer) Tietjerksteradeel Friesland Netherlands, was christened on 2 Oct 1785 in Garijp (Garyp) Tietjerksteradeel Friesland Netherlands, and died on 23 Jan 1847 in Huizum (Huzum) Leuwarden Friesland Netherlands, at age 61.