In the July to September 1916 birth index Minnie Cocker, mother’s maiden name Sheriff, Fylde, Lanashire, volume 8a, page 920

In the 1921 census 22 Oxford Road, Blackpool, Fylde, Lancashire
Son to Head Harold Wiggins Cocker, Agee 28 years 5 months, married, born Accrington, Lancashire, chauffeur - Thos. Pickles, 43 Whitegate Drive, Blackpool
Wife Maud Evelyn Cocker, age 25 years 3 months, married, born Lumb, Rawlenstall
Daughter Minnie Cocker, age 4 years 11 months, parents both alive, born Blackpool, Lancashire, whole time at school
Daughter Kathleen Cocker, age 2 years 6 months, parents both alive, born Blackpool

1939 England and Wales Register
21 Westwood Avenue, Blackpool, Lancashire
1. Maude Evelyn Cocker, born March 12 1896, widow, dressmaker
2. Ellen A. Cocker, born January 17 1912, widow, domestic duties
3. Minnie Cocker [later Maddox], born July 6 1916, single, professional dance
4. Kathleen Cocker [later Young], born January 13 1919, single, professional dance
1 other

In the October to December 1910 birth index Leslie C. Maddox, Manchester, Lancashire, volume 8d, page 219.

Parish Records - St. Augustine, Newton Heath, Manchester, Lancashire
Born August 30, 1910, baptism October 5, 1910 Leslie Coupe Maddox, parents Thomas and Miriam Maddox of 257 Queens Road, father is a clerk, ceremony by H. Petty

1911 Census 88 Bersford Street, Mosside, Hulme, Manchester
Head Thomas Maddox, age 31, commercial clerk for a cigarette manufacturer, worker, born Manchester
Wife Miriam Maddox, age 21, married 1 year, 1 child born alive, born Manchester.
Son Leslie Coupe Maddox, age 7 months, born Manchester.

In the 1921 census 88 Beresford Street, Moss Side, Chorlton, Manchester, Lancashire
Head Sarah Ann Jones, age 61 years 2 months, widow, born Louth, Lincolnshire, house duties
Boarder Sarah Margaret Chapman, age 70 years 1 month, widow, born Salford, Lancashire, house duties
Grandson Leslie Coupe Maddox, age 10 years 10 months, parents both alive, born Manchester, Lancashire, whole time at school
Grandson Thomas Francis Maddox, age 8 years 10 months, parents both alive, born Manchester, whole time at school
[Sarah Chapman would be the boys’ grandmother.]
[The boys’ father had died 5 years before so he was not alive, their mother had remarried.]

UK Incoming Passenger Lists
Departed New York, New York, arrived Plymouth England November 10, 1935 on the Lafayette, tourist class
Leslie Maddox, age 25, proposed address 48 Mountbel Road, Belmont Park, Middlesex, musician,
[of the 16 passengers in tourist class - 12 were musicians, 1 artist, 1 dancer, 1 stage manager and 1 chauffer]

1939 England and Wales Register
7 Kenton Park Crescent, Harrow, Middlesex
3. Leslie C. Maddox, born August 30 1910, single, professional musician

In the October to December 1939 marriage index Leslie C. Maddox and Minnie Cocker, Blackpool, Lancashire, volume 8e, page 1704

London Electoral Registers 1951
56 Wellington Road, St. Marylebone, Westminster
Leslie C. Maddox
Minnie Maddox
Kathleen Young

London Electoral Registers 1953
4 Heron House (Barrow Hill Estate) NW8, St. Marylebone, Westminster
Leslie C. Maddox
Minnie Maddox
Kathleen Young

London Electoral Registers 1964
4 Heron House (Barrow Hill Estate) NW8, Westminster
Leslie C. Maddox
Minnie Maddox
Peter D. Maddox
Kathleen Young

In the April to June 1974 death index Leslie Coupe Maddox, born August 30, 1910, died age 63, St. Marylebone, London, volume 14, page 1821

Leslie Coupe Maddox is listed as a member of Jack Hylton and His Orchestra on a number websites.