Lady or princess
Seidy is a modern phonetic variant of Sadie, which originated as a diminutive of the Hebrew name Sarah. It carries the same traditional meaning of 'lady', 'princess', or 'noblewoman'. While Sarah is a foundational biblical name, this specific spelling is a contemporary creative choice.
Less common today
Seidy isn't in the latest US Top 1000. It last peaked at #6,612 in 2013.
US births per 5-year period, 1990–present (SSA data).
