Ladeidre is likely a modern reshaping of Deirdre, an Irish name associated with sorrow in legend.
Ladeidre is likely a modern reshaping of Deirdre, the Irish name associated with sorrow in legend. That connection gives the name a literary undertone, even though the added La- beginning and altered spelling move it into a more contemporary, invented register.
It feels like tradition filtered through modern taste. Ladeidre has a dramatic, almost storybook quality. The Irish echo gives it depth, while the extra syllables and spelling variation make it feel personal and stylized.
Names like this often appeal because they retain a trace of myth or literature while sounding new enough to be individual. Ladeidre does that with a slightly theatrical elegance.