John Thomas Curtois
Baptised 11 June 1787 at Sixhills, second son of Rev. Rowland Curtois, and took up his freedom of the City of Lincoln 16 June 1818. Emigrated to the USA, arriving on board the ship 'Navy' in Boston on 15 September 1829 with his wife and two eldest children (the younger being recorded as 'Rowland Peregrine'). Died of consumption 1 May 1849, and is buried in Plot 1178 of the Winchester Street burying ground in Newton, Middlesex County, Massachusetts, along with two children (recorded as J. T. Curtois and R. R. Curtois). [Internet, here].
Seems to have tried his hand at shopkeeping:
Married at Frithville, 28 September 1822, Mary, only daughter of William Bailey of Meer Booth, near Boston. In the 1860 census, she was living at West Roxbury, Co. Norfolk, Massachusetts. Died 17 November 1890, aged 91 years, 6 months and 3 days, which means she must have been born 14 May 1799, and is buried in the Old City Cemetery, Sacramento.
Issue five children (from here), two of whom I don't know anything about:
John Henry Curtois, baptised 20 July 1823 at Frithville, Lincs.
George Parnell Rowland Peregrine Curtois, baptised 11 September 1827 at Carrington, Lincs.
William A. Curtis, born 11 August 1831 at Watertown, Massachusetts.
Louisa Elizabeth Curtis, apparently born 18 January 1837 in Roxbury, Massachusetts, and died ('Strangulated Hernia') at Sacramento 4 February 1874.Sacramento Daily Union, 5 February 1874 - "DIED. Franklin Township, Sacramento Co., Feb. 4- Louisa A., wife of Charles Mack, a native of Massachusetts, 37 years and 17 days. [Funeral from residence of William Curtis, on the lower Stockton road to-day at 12 o'clock. Friends are invited to attend]"
Married, at Sacramento on 24 March 1857, Charles Edwin Mack.Sacramento Daily Union, 26 March 1857 - "MARRIED. In Sacramento, March 24th, by the Rev. Mr. Shuck, Mr. Charles E. Mack to Miss Louisa Curtis, all of Sacramento."