Complex sentence: On 16 July he met in secret with Jean, Count de Dunois, at his mansion of the Rose in Candlewick street, the first of several meetings in London at which they planned a French invasion.
Split into simpler sentences: On 16 July he met in secret with Jean, Count de Dunois, at his mansion of the Rose in Candlewick street. The first of several meetings in London, they planned a French invasion.