John Gower, shoemaker, was the son of Thomas Gower,  cordwainer, and Sarah Gower. J Gower, cordwainer, age range 17-30, again very  probably the same man, was "Inrolled" in the Volunteer Militia, in  the Militia list of 1803 for Lindfield, during the big invasion scare  (Napoleon). Thomas Gower, cordwainer, aged under 55, probably John's father,  was "Willing to serve". 
From 1809 to 1815 John Gower, probably the same man,  is listed in the Land Taxes in the January 1810 Poor Rate) as a tenant, with  William Russell and then Edward Batchelor (blacksmith) of the cottage(s) that  stood on the northern corner of Denman's Lane, before "Arnold  Terrace" was built in the 1850s (41-47 High St including Standup Inn). 
As “John Gower senior” he appears in the rates and  assessments from 1825, when he was living as a tenant of Peter Pierce in the  northern (smaller) half of Crosskeys. His father Thomas had a house and  shoemaker’s shop in the southern (larger) part of Crosskeys, also as a tenant.  John was presumably working for his father. 
Upon Thomas’s death about  1828, initially Thomas’s widow Sarah was tenant of Crosskeys north, but by 1834  John had moved there and into the shop. He was there in the 1841 Census, 1842  and 1843 poor rates, and 1845 Tithe Assessment (plot 645); he moved from  Crosskeys in 1845/6 (Land Taxes). By 1849 Charles Westbrook, saddler and  harness maker, had moved in, and John had moved to 4, Pelham Place Cottages,  where he was still living in 1855. 4
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Men like cobbler John Gower of Lindfield, 1779-1857, renowned as a local historian and champion of working-class causes... 5
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In his father’s Will (written 1823), John was  bequeathed all his tools and implements of trade along with his stock of  leather.
At the time of the 1841 England Census John Gower,  aged about 60, shoemaker, and wife Sarah, aged about 52, were living in Town,  Lindfield, Sussex. With them were children: Jeremiah (15), Elizabeth (13), and  William (25), shoemaker
At the time of the 1851 England Census John Gower,  aged 72, born in Lindfield Sussex, widower, cordwainer, was living at 4 Pelham  Place Lindfield Sussex. With him were son Jeremiah (29), born in Brighton,  unmarried, bricklayer's labourer, daughter Elizabeth (21), born in Lindfield,  schoolmistress, grandson Alfred W.* (15), born in Ardingly Sussex.
* Alfred William Gower was a witness at the  marriage of his cousin Catherine Ann Lawless to George Benjamin Beck in Apr  1873 in Brighton Sussex.
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John Gower died aged  78 years.
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THE REMAINS OF JOHN GOWER were deposited on Wednesday  last in the new Cemetery on Walsted Common. They were followed to the grave by  his three sons, his two daughters, and numerous other relations and friends,  including Mr. Humphrey, Mr. Mills, Mr. Beard, Mr. C. Fleet, &c. It was a  matter of regret that the body of so old a parishioner, whose family had been  settled at Lindfield above 300 years, was not interred in the old church yard,  with that of his wife and a long line of ancestors....
Sussex Advertiser, 29 Sep 1857, p. 6 
    
  LINDFIELD
  Died on  Thursday, the 17th instant, at 4, Pelham Place, Lindfield, in the 79th  year of his age. Mr. John Gower, an old and much respected inhabitant, whose  decease is lamented as being, in some respects, an irreparable public loss. No  man was better known in the neighbourhood; and there was no man who could be  better trusted for exact information on all matters of local interest. As  reporter for the provincial and Brighton press, and as possessed of an amazing  fund of historic facts connected with Lindfield, its people and its  institutions, he commanded the deference and enjoyed the esteem of all classes.  The wealthiest and the wisest of his neighbourhood felt no hesitation in  consulting the opinions of John Gower, and in allowing him the free social  intercourse with themselves. Often has the Lindfield visitor found in him an  unwearying guide on all points touching the peculiarities of the parish, its  ecclesiastical difficulties, —which have not been few, —and its wonderful  progress of late years in physical and intellectual improvement. In the course  of his long life, he had served several offices, including those of constable  and clerk; and, though not an educated man, the singular depth of his  intelligence, the firmness of his purpose in mental application, and the  quickness of his perception more than made up for his want of scholarly  accomplishments. He was indeed quite a character. He had his frailties, but  almost all of them leaned to virtue’s side, and though at times he would appear  capricious and conceited, it was after all, a very excusable pride which John  Gower exhibited when he related how he, though only an illiterate, hard-working  cobbler, was honoured to sit up and take part with the celebrated William Allen  in his astronomical observations, and how some of the best archæologists of the  day called on him, and besought him to aid their researches. In fine, John was  a diamond in the rough, an uncultured philosopher, and though it is said, “Let  not the shoemaker go beyond his last,” he made no mistake in going beyond his  last; and the old adage, “materiem superabat opus,” was never better  verified than when he, the poor cobbling clerk of Lindfield, constructed his  own telescopes, sketched his own maps, and set up as the historian of his time.
Brighton Gazette, 24 Sep 1857, p. 7