J.C. Okkema has written:
'Inventaris'
J.C. Nyiri has written: 'Am Rande Europas'
J.C Coleman has written: 'The mountains of Killarney'
J.C Ewing has written: 'A Burns romance'
J.C Aggarwal has written: 'Theory and Principles of Education'
J.C Sabiston has written: 'Towards a national development policy'
J.C. Mayes has written: 'Weather Watchers weather booklets'
J.C Willke has written: 'The wonder of sex: how to teach children'
J.C Zadoks has written: 'Sea lavender, rust and mildew'
J.C Barringer has written: 'An introduction to Faden's map of Norfolk'
J.C Miller has written: 'Alexander Hamilton and the growth of the new nation'
J.C Bonbright has written: 'Holding Company, Its Public Significance and Its Regulation'
According to my family tree records, the oldest known forefather of the Okkema clan is Ocke Melis of the village of Goenga Friesland in the early 1700's. His youngest son, Edzerd took the family name of Ockema in 1811.This spelling was never used by any of his descendants. There is another family named Okkema originally from Goenga, descendants of Okke Tjipkes; they are not known to be related. According to my father, Okkema means son of Okke. There you have it.