Complex sentence: A few months later their first child was born, Menotti (1840--1903), he was born with a skull deformity due to a blow that Anita received when she fell from her horse in the flight from the Brazilian camp.
Split into simpler sentences: A few months later their first child was born, Menotti (1840--1903). He was born with a skull deformity due to a blow that Anita received when she fell from her horse in the flight from the Brazilian camp.