Complex sentence: The first known crown of sonnets was written by Slovene Romantic poet France Prešeren in his "Wreath of Sonnets", which was enriched with acrostic in the master sonnet.
Split into simpler sentences: The first known crown of sonnets was the "Wreath of Sonnets" by Slovene Romantic poet France Prešeren. It was enriched with acrostic in the master sonnet.