Children of George Kolbe and Margaret Downing are:
+ 2 i. Margaretha Wilhelmina Elizabeth2 Kolbe, born November 14, 1826 in Graaf Reinet, South Africa; died August 2, 1912 in Manor Owen, Barkly East, South Africa.
3 ii. John Gersom Eliezar Kolbe. He married Anna Jacoba van der Merwe.
+ 4 iii. George Augustus Kolbe, born February 23, 1836; died January 1913.
5 iv. Charlotte Felicia Kolbe.
6 v. Catherine Maria Sophia Kolbe. She married Petrus.
7 vi. Augusta Louisa Kolbe. She married George Werdmuller.
8 vii. Frederick Fortunatus Kolbe. He married Elizabeth du Toit.
9 viii. Mary Elizabeth Kolbe, born November 1835 in Burgersdorp; died February 26, 1863 in Vaalbank, Dist. Bloenfontien OFS, South Africa. She married George Enslin.
10 ix. Johan Casmier Kolbe. He married (1) Nn. He married (2) Nn.
11 x. Harriet Hachilah Kolbe. She married Spielberg.