De la Mora is a surname. "De la," in several Romance languages (including Spanish and Romanian), means "from." "Mora," in Spanish, translates to "mulberry."
"Mora" might represent a topographic surname for a family who lives or lived where mulberries grow or grew.
"Mora," might be part of an ethnic phrase that means "the Moorish woman's son," from mora "(female) Moor."
Similar surnames: Del Moral, Lamora, Delamar, De Moura, De La Torre, Della Porta.