I haven't looked deeply at the Blagg family but one of my relatives married into the family, although much of the info is based on the census at present;
Generation 1
1. Thomas Blagg was born ABT 1803 in Car Colston, Notts and died 1876. He married Grace Goulson 18 Feb 1833 in Car Colston, Notts. She was born 1812 in Knipton, Leicestershire and died Mar 1898 in Car Colston, Notts, daughter of Page Goulson and Dorothy Sampey.
Other events in the life of Thomas Blagg
Burial: 1876 in Name Thomas BLAGG Date 30 Aug 1876 Aged 74 Place South Collingham Description All Saints
Children of Thomas Blagg and Grace Goulson:
i. Mary Blagg was born 1834 in Car Colston, Notts
ii. Rebecca Blagg was born ABT 1835 in Car Colston, Notts
iii. Thomas Blagg was born ABT 1837 in Car Colston, Notts
iv. Henry Blagg was born ABT 1839 in Car Colston, Notts
v. 2. Page Blagg was born ABT 1841 in Car Colston, Notts
vi. Francis Blagg was born 1843 in Car Colston, Notts
vii. Grace Blagg was born 1845 in Car Colston, Notts and died 1883 in Collingham, Nottinghamshire
viii. Robert Blagg was born 1846 in Car Colston, Notts
ix. Edward Blagg was born 1848 in Car Colston, Notts
x. Sarah Blagg was born 1850 in Car Colston, Notts
xi. Unknown Blagg was born 1855 in Langford, Notts
xii. Arthur Blagg was born 1858 in Langford, Notts
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Generation 2
2. Page Blagg was born ABT 1841 in Car Colston, Notts. He married Augusta Howsin 1873 in Newark District.
I also have some headstone images from the church at Collingham and a couple of images of the church at
http://www.flickr.com/photos/50125734@N06/sets/72157624085752292/If this is the same family i'd be interested to hear from you, the Goulson family in the area had surgeons amongst the occupations.