Quote taken from
A History of Modern Taekwondo Part 2:
Hong-Hi Choi founded the Odokwan in 1953, supported by Tae-Hi Nam. The new kwan was based upon the principles used by the Ch'ongdokwan (which Choi also commanded in late 1954). After Choi fell into disfavor in the R.O.K. in the mid-1970s, official hi...
By Pete Mills
That just about covers it ;)