The Spanish Inquisition has just begun in early modern Spain and this script can be viewed as an expose of the times. Don Garcia is a compulsive liar which can be viewed as a socio-political reference to the 1630's.
Juan Ruiz de Alarcon was born in either 1580 or 1581 but it is uncertain. He was born in Tasco, Mexico where he was the son of a "mine expert and a woman of Spanish ancestry ramshackle". http://translate.google.com/translate?hl=en&sl=es&u=http://www.dramateatro.arts.ve/ensayos/n_0010/verdad_sospechosa_ii.htm&ei=ZFe9SdSnHZGYsAPB_9w-&sa=X&oi=translate&resnum=3&ct=result&prev=/search%3Fq%3Dla%2Bverdad%2Bsospechosa%26hl%3Den%26rlz%3D1T4ADBR_enUS271US271
Alarcon got his degree in law and attempted to get a professorship three times but was denied each time. "It is at this moment when Alarcon becomes the protagonist of his own tragicomedy." (from the above mentioned essay). Unfortunately this article was originally written in spainish and the rest of the essay could not be translated by my computer. The essay did mention that Alarcon among other men were "examples of what is commonly called 'miscegenation', and that in essence means akot more." I looked up the definition of miscegenation and found that it is the "marriage of or producing children with a member from a different race." http://www.google.com/search?hl=en&rlz=1T4ADBR_enUS271US271&defl=en&q=define:miscegenation&ei=2Vy9ScGBIIHasAPjoNRB&sa=X&oi=glossary_definition&ct=title
This may have had an impact on Alarcon and his writing.