Letitia comes from the Latin laetitia, meaning joy and gladness. It reached English through the medieval form Lettice, and has an old, refined elegance.
Borne by the poet Letitia Elizabeth Landon and long a genteel favourite, it offers the sweet nicknames Lettie and Tia.
Graceful and glad, Letitia is joy dressed in classical robes.
Letitia 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.
In Pythagorean numerology the letters of Letitia reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.