Lois, regarding your no.1 family, there appear to have been two John Rs from the IOM in the 1850 USA census, of about the same age.
"1. John Radcliff family
1850 Leroy census # 99: John Ratliffe 45 IOM; Catherine 30 IOM; Maria 17 Ohio.
Have not yet found any further information about this family, but they were next door to the family of Thomas Radcliff/Mary Kewish in the 1850 census."
The other John Radcliffe:
1850 Ohio census
Warrensville Township
3207
RADCLIFFE John C. 45 farmer IOM
Anna 37 IOM
John 26 IOM
Robt 22 IOM
Eliza 16 Ohio
William 5 Ohio
Thomas 3 Ohio
Charles 2 Ohio
Phillip 6/12 Ohio
CORLETT Catharine 67 IOM
[Jane Marshall]
John Radcliffe marr. Ann Corlett 25 Oct. 1835 Lezayre?
Your John no.1 in 1860:
Maria J Turner in the 1860 Ohio census, living in Hambden Ohio.
1860 Ohio Census
Cornelius Turner 29 shoemaker NY
Maria J 26 Ohio
Adelina C 5 Ohio
Edna 3 Ohio
Capital 1/12 ohio
John Radcliffe 56 Isle of Man farmer
1870 Census Hambden Geauga Ohio
Turner, Cornelius 39 farmer NY
Turner Maria 36 Ohio
Turner Edna 13 Ohio
Turner Capitola 10 Ohio
Turner, J. D. 4 Ohio
Turner Loretta 69 NY
family living next door
Ratcliff, Henry 34 Farmer IOM
Ratcliff, Elizabeth 30 IOM
Ratcliff,Josephine 9 Ohio
Ratcliff,Evaline 4 Ohio
Ratcliff, William 3 Ohio
Ratcliff, Martin 3/12 Ohio
1880 USA census Hambden Geauga Ohio
Turner, Cornelius 49
Turner, Maria J 46
Turner, J.D. 14
Brewster, Capitola 20
Cornelius Turner b. 1831 NY son of ? Slyvanius and Loretta Turner m. 2 Jan 1854 Maria J Radcliffe. D. 26 Sept 1899 68 yrs.
Maria J b. 23 Aug 1833 Ohio. D. 20 Dec 1913.
Children of Cornelius and Maria
Adelina b. 1854 d. 28 Sept 1865 11 yrs
Edna no info
Capitola b. 1859 m. Charles Brewster 5 Sept 1877
John D b. 1866 m. Basha Thrasher 28 Dec1892 D 1930 Basha d. 18 Sept 1926
Cornelius, Maria, JD and Basha buried in same burial plot.
Only ones found 1900 were Capitola and Charles.
The above records are all Carol Gosselin's hard work.
John Radcliffe son of John Radcliffe and Ann Christian b.15 Sept 1805?
John Radcliffe bapt 21 Aug.1803 Andreas son of Wm Radcliffe, Sumner, & Margaret Killip? William the Sumner's 1849 will mentioned "my son John Radcliffe who is beyond seas".
There were also other John Radcliffes born around 1804.
Do you know who No.2 John aged 45 above was, or the John aged 26?
Sue