[1] George Florance Irby was born on 6 September 1860 at The Grange, Taplow, Buckinghamshire.
He was the eldest son of Florance George Henry Irby, 5th Baron Boston, and the former Hon.
After his father's death in 1877, his mother married Sir Henry Percy Anderson, Assistant Undersecretary for Foreign Affairs, in 1883.
Both his step-grandmother and mother were daughters of John Saumarez, 3rd Baron de Saumarez and, his first wife, Caroline Esther Rhodes (daughter of William Rhodes of Kirskill Hall, Yorkshire, and Bramhope Hall, Yorkshire).
On 13 March 1890 at Hedsor, Buckinghamshire, Lord Boston married his first cousin, once removed, Cecilia Constance Irby, daughter of Hon.