No, Christine McVie was never married to Lindsey Buckingham.
Christine McVie has been married to John McVie (1968 to 1976) and Eduardo Quintela (1986 to 2003). Lindsey Buckingham has been married to photographer and interior designer, Kristen Messner since 2000.
A few months after Christine McVie rejoined Fleetwood Mac in 2014, she and Fleetwood Mac guitarist Lindsey Buckingham reconvened at Studio D at the Village Recorder in Los Angeles.
They recorded a studio album dubbed Lindsey Buckingham Christine McVie (also referred to as simply Buckingham McVie). It was released on June 9, 2017.
Four of the five “classic members” of Fleetwood Mac are featured on the album; vocalist Stevie Nicks is the sole member absent.
The album sold over 22,000 units in the United States in its first week and debuted within the top 20. It proved to be even more successful in the United Kingdom, where it debuted at #5.
In November 2017, the album was also certified silver with sales exceeding 60,000 units. This would be McVie’s last release before her death in 2022.