Liam began as an Irish short form of William, itself from Germanic roots often rendered as "strong-willed warrior" or "protector." The name is commonly read as carrying resolve paired with a protective instinct -- strength directed outward, toward guarding others, rather than kept for its own display.
Mercury can be used for one thing and its contrary because it is of a variable nature. - Picatrix (Andalusia, ~1000.AD)