Hello Richard
If you are part of the "Richard and Sarah Rogers family" that is posted on the Internet, then the Florence Callow who married an Alfred Knight in 1911 is not the Florence L Callow born 1890 in Douglas IOM. Florence L. Callow, grandaughter of Sgt. William Callow, was married to a Mr. Callister at the time of her father's (John William Henry II) death in 1927 in Douglas.