Complex sentence: The Paynter family were known to be Jacobite sympathisers and in 1745 villagers at St Buryan were convinviced that the Paynter family were harbouring Charles Edward Stuart (the Young pretender).
Split into simpler sentences: The Paynter family were known to be Jacobite sympathisers. In 1745 villagers at St Buryan were convinviced that the Paynter family were harbouring Charles Edward Stuart (the Young pretender).