Chicken Shack are a British blues band, founded in the mid-1960s by Stan Webb (guitar and vocals), Andy Silvester (bass guitar), and Alan Morley (drums), who were later joined by Christine Perfect (McVie) (vocals and keyboards) in 1968. Chicken Shack has performed with various line-ups, Stan Webb being the only constant member.
Christine Perfect was married 
The context said that Christine's name is Christine Perfect (McVie).  This implies that McVie is her maiden name, and she changed name when she married. It may be difficult for the system as it may not understand the convention of maiden and married names