Many thanks Shaun for this information. You might just have shattered my "brick wall" that I have had since 1970's but will need to do some further checking before I can confirm!
With the information that you have provided I have done some further research. Herbert Alfred CLARK married Rose NAPIER in 1915 (Sept Q Edmonton). A Rose NAPIER was born in the June Q 1890, Edmonton. Her parents appear to be Henry and Mary Napier.
In the 1901 census for Edmonton, Middlesex, Parish All Saints, Shrubery Road, Edmonton there is a Henry J Napier age 46 years born Islington and Mary age 46 years born Coggleshall, Essex and children: Maud age 19, Charles age 15, Lily M age 13, Rose age 10 and Stanley age 8.
There is a Henry James Napier born Apr-Jun 1854 Islington.
To back track - If Miss L M Napier is Lottie Madeline Napier born in NZ in 1888 - her parents are William Henry Napier (b 13/6/1864 The Fortune, Elstree, Edgeware, Middlesex) and Eliza COOK. William Henry Napier's father was William Henry Napier born c 1835, Topsham, Devon (unable to find a birth/baptism). He married a Julie Harriet FARROW (aka FARR) c 1859 in Fulham (also unable to find this marriage).
I will look to find the connection between Lottie and Rose's family.
If I can find it, it may help me get past my "brick wall".
Many thanks
WNW