I can also access the Encyclopaedia Britannica and the Oxford Dictionary of National Biogprahy through the library membership subscription and the later has a biography for him but it is cvopyright so I cant post it It says He joined the Peelites was quite close to Gladstone and ultimately became a Liberal  no dates I cant access Britannica at the moment due to high traffic levels or so it says Erm there may be some question as to the date of his death The DONB gives  December  as does the Wikipedia article but I am looking at an edition of The Times from Tuesday th December  which states We deeply regret to announce the death of the Rt Hon Henry Fitzroy  on Sautrday last   that would mean he died on th December  Unfortunately there doesnt appear to be a full obit In the edtion for th Jan  there is a report of the unopposed election of his successor on th January  one John George Blencowe apparently maternally descended from another former Lewes Liberal MP Sir Francis Poole who sat as the MP  years before or so the article says