The Queen's hidden cousins: They were banished to an asylum in 1941 and left neglected now an intriguing documentary reveals all. Nerissa (pictured) was born in 1919, and Katherine in 1926 - their father was John Bowes-Lyon, one of the Queen Mother's older brothers

The Queen's hidden cousins: They were banished to an asylum in 1941 and left neglected now an intriguing documentary reveals all. Nerissa (pictured) was born in 1919, and Katherine in 1926 - their father was John Bowes-Lyon, one of the Queen Mother's older brothers