T'Cael Zaniidor Kilyle.
T'Cael Zaniidor Kilyle was a Romulan man who lived in the 22nd and 23rd century. In his later life, exiled from the Romulan Empire, he adopted an alias as a Human named Cale Sandorsen. (TOS novel: Final Frontier)
Biography[]
Romulan space service[]
T'Cael served for many years in the Romulan Imperial Fleet and rose to the flag officer rank of field primus. (TOS novel: Final Frontier)
Federation diplomacy[]
With George Kirk as his "adjutant" (presumably acting as a sort of security handler due to T'Cael's true alien origin), t'Cael's identity as Cale Sandorsen allowed him to establish a tone for Federation diplomacy which set the standard for future generations. (TOS novel: Final Frontier)