John Mark Leteipan was born on 20th November 1915 at Siyiapei, Narok, Rift Valley to an A.I.C Evangelist father, the late Samuel Samoire and Christian mother, Mariamu Leteipan. John Mark was the second born child of Samuel and Mariamu. He had five siblings: David Mutii, Ruth Koikai, Charles Leteipan and Mary Leteipan. They were a very humble family. John Mark’s early determination and love for education can be traced back to the AIC Missionaries, who settled at Siyiapei, Narok, and later relocated to Ole Kijabe.