In the April to June 1866 birth index Norman Keyl, Marylebone, London, volume 1a, pre 550.

Parish Records St. Marylebone, Westminster, London
Born May 2 1866, baptism May 29 1866 Norman Keyl, parents Frederick William Keyl and Sara Constance Keyl, abode 33 Carlton Hill, father is an artist.

In the 1871 census 67 Carlton Hill, Marylebone, London
Head Frederick W. Keyl, age 47, artist, painter, born Germany
Wife Sara C. Keyl, age 40, born India
Son Norman Keyl, age 4, born London
Daughter Frances M. Keyl, age 2, born London
Son Baby Keyl, age 1 month [or perhaps week], born London
Daughter Henrietta Keyl, age 16, scholar, born London
Aunt Elizabeth Woodin, age 73, independent, born India
3 servants
[It would seem Elizabeth is Sara’s aunt. Sara Constance Woodin (daughter of William Woodin, merchant) married Frederick William Keyl in 1852 ]

In the January to March 1875 death index Norman Keyl age 5 died Marylebone, London, volume 1a, page 533.