Sentence:  This is where I first read Yeats' "The Stolen Child", Joyce's "Araby", and Synge's "Playboy of the Western World", among others. These three for me were the <WSD>holy trinity </WSD>of Irish writers and it was on that strand that I succumbed to their enchantment. 
Meaning of the word marked with <WSD> tags:  A triad of  people or things which are considered (especially) essential.