== Baggrund ==
Nelson er født og opvokset i [[Romford]], i den østlige del af London, som datter af John Nelson og Janice White. Hun har en ældre søster Jade og to brødre Joseph og Jonathan.<ref name="Ali 2011">{{cite news|url=http://www.romfordrecorder.co.uk/news/romford_s_jesy_nelson_has_made_history_by_winning_x_factor_with_little_mix_1_1151474|title=Romford's Jesy Nelson has made history by winning X Factor with Little Mix|last=Ali|first=Safira|date=12. december 2011|work=Romford Recorder|accessdate=22. december 2011|archive-date=11. juni 2012|archive-url=https://web.archive.org/web/20120611131134/http://www.romfordrecorder.co.uk/news/romford_s_jesy_nelson_has_made_history_by_winning_x_factor_with_little_mix_1_1151474|url-status=dead}}</ref><ref name="Heat">{{cite news|url=http://www.heatworld.com/Celeb-AZ/Jesy-Nelson/|title=Jesy Nelson|accessdate=22. december 2011}}</ref>
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