Christmas Day or birthday of the Lord
A modern elaboration of Natalia, which is derived from the Latin phrase 'dies natalis'. It historically refers to the birth of Christ, making it a traditional choice for girls born during the Christmas season. The addition of the 'h' suffix is a contemporary American stylistic choice.
Less common today
Nataliah isn't in the latest US Top 1000. It last peaked at #4,826 in 2010.
US births per 5-year period, 1990βpresent (SSA data).