I will do a double check with my aunt who lives in London. She told me he never married. My uncle in New Zealand has also done the family geneology and I will check with him.Unfortunately he is not on email.
Can I just check that the Arthur Mee you are talking about is the author who wrote the 12 volume Childrens Encyclopedia.
If this is the one you are talking about - have you had any difficulty tracing the family history? My uncle was held up for some years as the Mees in the late 18th Centruy or early 19th Century adopted at least one child and these children took the name of Mee.