Complex sentence: Beatrice was first betrothed not long after her birth on 4 March 1223 to Manfred III, Marquess of Saluzzo however, the contract was broken off but was then renewed on 2 October 1227; a contract signed on that date refers to the dowry of Beatrice.
Split into simpler sentences: Beatrice was first betrothed not long after her birth on 4 March 1223 to Manfred III, Marquess of Saluzzo. However, the contract was broken off but was then renewed on 2 October 1227; a contract signed on that date refers to the dowry of Beatrice.