On Rootsweb, I came across a list of Marriage Licenses issued that was published by the Brooklyn Daily Standard Union on August 29, 1912. This was one of the entries:
KING, John..29..527 Baltic st
GAVIN, Annie..23..221 Fifth av
It appears that John King was still living with his sister's family at 527 Baltic in 1912 when he married a girl named Annie Gavin.
(Hope that was a nice change from the heartbreak of young girls dying tragically that I've shown you recently.)