Xavier traces to a Basque place name usually translated as "new house," later carried into wider use through a well-known missionary who took it as a surname. The name suggests a fresh start built on solid ground -- newness paired with structure rather than instability.
When either Taurus or Libra ascend in women's nativities, and Mars therein, the native will be immodest and unchaste; the same if Capricorn shall ascend. - William Lilly (1602.-1681.)