Mia functions as both an independent name and a diminutive, with roots touching Scandinavian, Italian, and Hebrew-derived threads -- variously given as "mine," "beloved," or, more distantly, "bitter." The dominant modern reading leans toward affection and closeness, a name often chosen for its warmth and brevity rather than its more contested branches.
The qualities of Saturn and Mars are not made better by their Conjunction; being mixed so together, they are confounded, and hurt very much. - William Lilly (1602.-1681.)