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Johann Georg Deyerlein (c1767-1826) of Holtzapffel and Deyerlein
1808 January 27th. Married. John George Deyerlin(Sic) and Sarah Stacy, both single and of this parish, at St. Pancras Parish Chapel, Camden. Witnesses were George Stacy and Ann Holzapffel
1810 March 22nd. 'Patent granted to Johann George Deyerlein, late of Long Acre, in the Parish of Saint Martin-in~the-Fields, in the County of Middlesex, but now of Cockspur-strcet, in the same Parish and County, Tool Maker; for a Machine, new Principle, or Method of making Bricks and Piles, and also by means thereof of Clay, Loam, or similar Materials to those, commonly used in Potteries, to make all Sorts of Mouldings, Beads, Tubes, Gutters, Channels, or Cylinders to convey Water, Smoke, Steam, or any Fluid or soft Substance.'
1811 Patent. 'Bricks. A patent was some time since obtained by a Mr Deyerlein for making bricks, by means of machinery. The following is a concise description of the process.....'
1813 June 16th. Burial of Sarah Deyerlein of St. Martin in the Fields, age 28. Buried at Sutton.
1816 Servant. 'Eleanor Woodman, an interesting girl, servant to Mr. Deyerlin, in Long-Acre, poisoned herself last week, a deranged state of mind, occasioned by the horror she felt at finding herself pregnant — the name of her seducer did not transpire'
1825 Patent. 'To J. G. Deyerlein, Mercer-street, Middlesex, (smith and tool-maker); for improvements on weighing machines, communicated to him by a person residing abroad, which he denominates German Weigh-bridges' 
1826 October 13th. Died 'On the 13th inst, Mr Johann Georg Deyerlein, of 5 Mercer Street, Long acre, aged 59.'
1826 October 16th. Buried at Sutton
1749 February 23rd. Susanna Deyerlin, age 19, buried at the Collegiate Church of St Katherine by the Tower
1805 November. 'Yesterday was married at St. Peter's Mancroft, Mr. Benj. Johnson, hosier, of Cheapside, London, to Miss Sarah Stacy, second daughter of Mr. G. Stacy, druggist, of this city'