Details of John's birth are not known.

John married Emma Jane Lemon in 1909 in Derby, Derbyshire.

He had the following children from his marriage to Emma Jane Lemon:

- Sarah Ann Mosley	born in 1913 in Derby, Derbyshire.
- Harriet Mosley	born in 1916 in Derby, Derbyshire.
- Tom Mosley	born in 1917 in Derby, Derbyshire.
- Nellie Mosley	born in 1921 in Derby, Derbyshire.
- George E Mosley	born in 1922 in Derby, Derbyshire.

Details of John's occupation are not known.