"Absolutely," "Through and Through," "Constant Covenant" and "Standing in the Darkest Hour" are all titles that would be appropriate for an essay about loyalty. "Faithfulness and Sincerity," "When I'm Needed" and "However Long it Takes" are also appropriate titles.
Using synonyms or well-known proverbial phrases is a good place to start when considering a title for an essay about loyalty. Synonyms for loyalty or loyal personalities include "allegiance," "incorruptible" and "constancy." Opposite words are also an option to use as titles, such as "treachery." If an essay or story relates to a character in another country, using the foreign vocabulary is a good idea. An example of this would be the Italian word for loyalty, "fedelta."