Double barrel names can be made up of any two names. Very often the separate meanings of the two root names do not make sense when combined together, so we shall look at them separately. Lexi came about as a pet form of the name Alexandra which is the feminine form of the masculine Alexander, the names are said to mean ‘Leader’ and are Greek in origin. May is a feminine name which can be seen as a pet form of Mabel, or be derived from the name of the month.