He was born at his parents' home, Manor Lodge, close to his paternal grandparents' estate of Abney Hall, Cheadle.

The 1939 Register shows him residing with his parents at Abney; still working in the family business, he is also listed as a captain in the 6th Battalion/22nd Cheshire Regiment.

In April 1930, newspapers announced his engagement to Lady Rosemary Wilma Bootle-Wilbraham, daughter of the 2nd Earl of Lathom; the ceremony was scheduled for June in Westminster Cathedral, and Watts' cousin Rosalind Hicks was to be among the child attendants.

Following a memorial service in St. Mary's parish church, Cheadle, she was privately cremated; in November, her remains were interred in the grave of her godmother Margaret Miller.

Watts' father died from heart trouble and infection of the bronchi in Cheadle hospital; his ashes were interred with those of his wife on 17 July 1957.

[1] Following his father's death, Watts sold Abney Hall to the Cheadle and Gatley District Town Council for about £12,000.

Watts' permanent residence was a five-storey terrace house in Chester Street, Belgravia, London, which he held on a long-term lease.