D. H. Th. Vollenhoven
Dirk Hendrik Theodoor Vollenhoven (November 1, 1892, Amsterdam – 1978) was with Herman Dooyeweerd the first generation of reformational philosophers, an intellectual movement with which Vollenhoven worked communally from his election in 1936 as President of the newly-organized group formed to advance the movement; the organization is now known as the Association for Reformational Philosophy.
(Outside formal settings Vollenhoven always preferred to be addressed simply as "Theo," pronounced in his native Dutch with only a "t" sound, but spelled "Th" in deference to the Theta-sound in the Greek origins of the name.)
Read more about D. H. Th. Vollenhoven: Pastor, Doctorate and The VU University, Christian Philosophy, Vollenhoven and Dooyeweerd, Problem-Historical Method, Critical Problem-Historical Method, Footnotes