Doda Duwa Duxia de Falaise - Children

How can she have had 3 sons after 1003 if she died in 1003?

A multitude of data-driven genealogical surveys have replicated this error, which stems simply from the faulty transcription of one record: Doda (Duxia) is assumed to not have died before giving birth at least to Herleva in 1003.

Hence she died in that year, or conceivably decades after.

She is my 28th GGM