What is First?

Legal Definition
Initial; leading; chief; preceding all others of the same kind or class in sequence, (numerical or chronological;) entitled to priority or preference above others. Redman v. Railroad Co., 33 N. J. Eq. 165; Thompson v. Grand Gulf R. & B. Co., 3 How. (Miss.) 247, 34 Am. Dec. 81; Hapgood v. Brown, 102 Mass. 452.
-- Black's Law Dictionary