Complex sentence: Kristina married firstly Malcolm Ross in 1971, and secondly Stewart Copeland in 1982; she met Copeland while he was first road manager and then drummer for Curved Air (1974--1976); they divorced in 1991.
Split into simpler sentences: Kristina married firstly Malcolm Ross in 1971, and secondly Stewart Copeland in 1982. She met Copeland while he was first road manager and then drummer for Curved Air (1974--1976); they divorced in 1991.