Kencana is from the Sanskrit kāñcana (काञ्चन — gold) — adopted in Malay-Indonesian feminine naming. Kencana is one of the Malay-Indonesian feminine royal-aesthetic names — central to traditional Nusantara naming heritage. Princess Kencanawungu (Kencana Wungu) was the queen regnant of the Majapahit Empire (reigning c. subject of Indonesian wayang topeng dance-drama. Indonesian royal feminine name.
Kencana does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
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In Pythagorean numerology the letters of Kencana reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.