I realised as I looked at my information on Brewitt that I had not really pursued the line - so I am unable to confirm the relationship.The name is not common in the district so I will be surprised if we are not talking about the same family.I thought I would give you the info I have and you can work it yourself.I hope it is of value to you.
Brewitt of Haxey, Lincolnshire
19 Aug 1764 Ann Brewitt do Samuel & Ann 23 Nov 1766 Samuel Brewitt so Samuel & Ann (In the 1770's Thomas Brewitt was a church warden in Haxey) 4 Aug 1799 Ann Brewitt do Samuel & Ann 6 Jan 1807 Hannah Brewitt do James & Elizabeth 7 Jan 1807 Ann Brewitt do William & Mary 6 Jul 1808 Mary Brewitt do William & Mary 7 Jan 1811 Elizabeth Brewitt do William & Mary 6 Mar 1811 John Brewitt so James & Mary 7 Dec 1812 Sarah Hannah Brewitt do William & Mary 25 Sep 1837 Sarah Ann Brewitt dau of Ann Brewitt of Haxey spinster 5 Aug 1849 William Brewitt son of John & Sarah of East Lound a farmer 30 Dec 1850 Mary Jane Brewitt do John & Sarah of East Lound a farmer 10 Jul 1853 Christiana Brewitt do John & Sarah of East Lound a farmer 5 Aug 1855 Mary Brewitt do John & Sarah of East Lound a farmer 13 Jun 1857 Ann Maria Brewitt do John & Sarah of East Lound a farmer 28 Aug 1860 Samuel Brewitt so John & Sarah of East Lound a farmer 19 Oct 1862 John Thomas Brewitt so John & Sarah of East Lound a farmer b. 3 Aug 1862
3 Jun 1773 Thomas Coggan & Elizabeth Hasselby both of this parish 2 Dec 1802 William Taylor and Catherine Coggan both of this parish by licence both signed. Witnesses Robert Coggan and Robert Curtis 27 Dec 1805 William Brewitt and Mary Coggan both of this parish by Licence, he signed she X Witnesses Henry Hasselby and Robert Laister 14 Oct 1806 James Brewitt and Elizabeth Spencer by banns booth signed Witnesses George Spencer and Thomas Fillingham 27 Nov 1809 Thomas Coggan of the parish of Misterton and Susanna Winter of this parish, he signed she X Witnesses Robert Coggan and Peter Winter 22 Apr 1830 William Taylor bat of this parish & Ann Brewitt spin of same parish, by banns, he signed she X. Witnesses Gervas Hillas?, Charles W Wright and John W Wright 6 Feb 1840 Henry Newborn 29yrs a farmer of Burnham (Father Henry a farmer) and Elizabeth Brewitt 29 yrs spin of East Lound (Father William Brewitt a carpenter) he signed she X Witness Stephen Newborn and George Ducker 13 Feb 1841 William Jenkinson 21 yrs bat a labourer of Overton (Father George a bricklayer) and Ann Brewitt 24 yrs spin of Haxey (Father James Brewitt a farmer) He signed she X.Witness William Taylor, Sarah Brogden and WR Wright 19 Oct 1847 John Brewitt OFA (of full age) bat a farmer of East Lound (father William a carpenter) and Sarah Curtis OFA spin of Newbigg (Father William Curtis a farmer ) both signed Witness Christiana Curtis and Martha Gunby
5 Jan 1752 Elizabeth Brewitt do Thomas & Ann buries 8 Dec 1752 Hannah Brewitt wife of Thomas buried 30 Jan 1763 Samuel Brewitt buried 21 Jul 1765 Elizabeth Brewitt a widow 11 Feb 1766 Ann Brewitt do Samuel and Ann buried 7 Oct 1806 Ann Brewitt wife of Samuel 64 yrs 9 Jun 1817 John Brewitt 2 yrs of East Lound 17 Jul 1817 Harriet Brewitt 8 weeks of East Lound 18 Apr 1829 John Brewitt 52 yrs of East Lound 8 Jun 1840 John Brewitt 29 yrs of Haxey 5 Sep 1841 Mary Brewitt 81 yrs of Crowle 8 Dec 1852 Mary Brewitt 72 yrs of East Lound 25 Oct 1854 Mary Brewitt 56 yrs of Westwoodside 19 May 1898 Sarah Brewitt 72 yrs of East Lound 18 May 1900 John Brewitt 78 yrs of East Lound 3 Nov 1911 Ann Maria Brewitt 54 yrs of Doncaster 6 Jan 1912 Mary Jane Brewitt 61 yrs of Misterton
Census 1851 census of Haxey John Brewitt 28 Farm Labourer b. Haxey Sarah 25 b. Haxey William 1 yrs b. Haxey Mary Jane 3 months b. Haxey
1851 census of Loughton John Brewitt 59 Farmer of 30 acres b. Lincs Scawby Elizabeth 66 b. Lincs Laughton John 23 yrs unmar Ag Lab b. Lincs, Laughton