Gimli74. Late to the Party here and the party may be over by now, however John Henry Harber is my great grandfather's half brother. See extract from GRO, re his birth.
HERBERT, JOHN HENRY Mother's Maiden name: PERRY
GRO Reference: 1886 J Quarter in WESTBROMWICH Volume 06B Page 898
His father alternated surnames between Herbert and Harber. When he married my great great grandmother Eliza Jane Perry Tracey, he called himself Harber. My great great grandmother was still married to her first husband, I believe, hence the possible explanation for use of different surnames, particularly on the British Census.
If this message reaches you I can explain further. I invited you to guest my family tree on Ancestry.
Best regards Jane