Solution

Each of the 10 sentences refer to a castle-like construction. The first one for example is the Fortress of Solitude in Superman. By putting the names in the blocks and taking out only the ones marked with red, you get the phrase FIRSTGOTHICBOOK. Googling this reveals that the first gothic book is The Castle of Otranto. The remaining numbers are an Ottendorf cipher, where the numbers refer to Chapter - Paragraph - Word - Letter. Following this gives the word slave. The last step is to figure out who the slave in the book is. The answer is jaquez.