The illustration above comes from the Luttrell Psalter, England ca. 1325-1340 (British Library, Add 42130, fol. 146v).
The one below depicts the world's most famous C-section. "Birth of Julius Caesar, Les anciennes hystoires rommaines, Paris 14th century." (British Library, Royal 16 G VII, fol. 219r)
Addendum - a tip of the blogging hat to reader Snotty, who offers this well-written article about The Truth About Julius Caesar and "Caesarean" Sections, which suggests that the term Caesarean derives not from the birth of Julius Caesar, but from the Lex Caesarea - a Roman law mandating surgical removal of the fetus from dying mothers.
Both items via the quite remarkable Discarding Images tumblr.