Nathanial Hales married Frances Plane 14 Feb 1826 at West Somerton, died 24 Feb 1850, his obituary reads the eldest brother of Robert Hales the Norfolk Giant, the deceased stood 6' 8"
Ref Gentleman's Magazine June 1850 page 452.
Thomas married Hannah Sophia Dyball 1851, died 14 Feb 1897
Hannah married William Read 1825
Sarah married Thomas Peggs 1848 (ref still single 1841 census)
Mary Ann married Joseph Laskey 24 March 1838 St Nicholas Liverpool, under her name is written giantess. Note Joseph is an traveler with a exhibition. Perhaps Mary Ann was part of the exhibition.
she died 1841
Ann married Joseph Laskey her sisters widower 1843 at St George the Martyr London although he still says he is a batchelor, both entries have traveler as occupation and father as James Laskey- miller as father.
Hester went to Philadelphia landed New York 5 May 1838 age 20
William married Ann Bultitude 1828 and also went to Philadelphia, did not find his immigration but he was on the 1850 census.
Robert - there is a passenger list dated 4 March 1850 ship Adelaide going to New York via Havana Cuba, his description is Giant.
A book called Memoirs of Mr Robert Hales, the English Quaker Giant says he married Elizabeth Simpson 1849 New York a giantess.
All births and marriages were C of E so I don't know where the Quaker part comes in, unless he converted.