Both Uses

sovereign
in
Love's Labour's Lost
(Auto-generated)

A man of sovereign parts, he is esteem'd, Well fitted in arts, glorious in arms: Nothing becomes him ill that he would well.†
Scene 2.1 *
This wimpled, whining, purblind, wayward boy, This senior-junior, giant-dwarf, Dan Cupid; Regent of love-rimes, lord of folded arms, The anointed sovereign of sighs and groans, Liege of all loiterers and malcontents, Dread prince of plackets, king of codpieces, Sole imperator, and great general Of trotting 'paritors: O my little heart!†
Scene 3.1

Definitions:

(1) (sovereign)
a supreme ruler; or describing a political body as self-governing
(2) (meaning too rare to warrant focus)
a British coin used until 1914; an adjective describing something as powerfully effective