His birth could be either, at least, of these:

Q1 of 1859, Greenwich dist, vol 1d, p. 659
Q1 of 1859, Medway dist, vol 2a, p. 362
_________________

In 1881 he was single and living with his mother in Woolwich.

There are loads of Charles J Brown marriages after 1881.  One in 1889 at Greenwich is a possible, but there are others.

No sign of him in the 1891 or 1901 censuses.
_________________

There will be far to many CJBs to guess at his death date, but the following between 1881 and 1960 fit in with an 1859 birth:

Surname   First name(s)   Age   District   Vol  Page
Deaths Jun 1887   (>99%)
Brown Charles James 27 Cambridge 3b 291
Deaths Dec 1890   (>99%)
Brown Charles James 31 Billericay 4a 262
Deaths Dec 1892   (>99%)
Brown Charles John 33 Hackney 1b 311
Deaths Jun 1902   (>99%)
Brown Charles James 43 Aston 6d 145

Surname   First name(s)   Age   District   Vol  Page
Deaths Dec 1911   (>99%)
BROWN Charles J 52 Nottingham 7b 260   

Surname   First name(s)   Age   District   Vol  Page
Deaths Mar 1915   (>99%)
Brown Charles J 55 Cosford 4a 1375
Deaths Mar 1940   (>99%)
Brown Charles J 79 Pontypool 11a 399

The Billericay death in 1890 looks a possible as it was in the London area and he cannot be found on the 1891 census.
_________________