Complex sentence: The Beetons came to an agreement with Goubaud for the Frenchman to provide patterns and illustrations for their magazine; the first edition carrying the new feature appeared on 1 May, six weeks after the couple returned from Paris.
Split into simpler sentences: The Beetons came to an agreement with Goubaud for the Frenchman to provide patterns and illustrations for their magazine. The first edition carrying the new feature appeared on 1 May, six weeks after the couple returned from Paris.