I am a descendant of the Cains of Camlork farm and the 13 year old John in the 1901 census is my grandfather
His father is Robert Joseph Cain (b1865) who was widowed early - hence some of the children lived with their father and grandparents at Camlork, the girls lived in Douglas

Yes you are correct these are the Cains that were at Ulican and they moved out of necessity when the dam was built
The only names that you suggest might fit are all foreign to me - I have ten years of research behind me now and some of the names you are trying to fit don' t tally with census data,birth marriage and death info that I have. I maybe able to help by giving you an outline descendant tree

Descendants of Philip Caine

1 Philip Caine 1806 - 1879
. +Catherine Waterson 1812 - 1882
........ 2 Esther Cain 1835 -
........ 2 Margaret Anne Cain 1835 - 1907
............ +Philip Faragher 1833 - 1907
................... 3 Philip Faragher 1863 - 1871
................... 3 Catherine Faragher 1869 -
................... 3 William H Faragher 1871 1873
................... 3 John Albert Faragher 1878 - 1902
........ 2 Philip Jr Cain 1836 - 1910
............ +Mary Anne Corkill 1840 - 1921
................... 3 Robert Joseph Cain 1865 - 1935
....................... +Jane Elizabeth Coole 1862 - 1897
.............................. 4 John Joseph Cain 1888 - 1954
.................................. +Jane (Jean) Sutherland 1893 - 1961
.............................. 4 Alfred Nelson Cain 1890 - 1898
.............................. 4 Robert Benjamin Cain 1892 - 1893
.............................. 4 Elizabeth (Jane) Cain 1894 - 1918
.............................. 4 Mary Kate (Katherine) Cain 1896 - 1978
.................................. +Arthur Quayle
................... *2nd Wife of Robert Joseph Cain:
....................... +Margaret Julia Clague 1877 - 1940
................... 3 George William Cain 1867 - 1936
................... 3 Albert Cain 1869 - 1953
....................... +Eleanor Lenora Gelling 1866 -
.............................. 4 Herbert Cain 1896 -
.................................. +Violet May Brew 1898 -
.............................. 4 George Albert (Georgie) Cain 1899 -
.................................. +Mary Rudd
.............................. 4 Benjamin (Benny) Cain 1902 -
.............................. 4 Daisy Cain 1904 -
.................................. +Mr McHarrie
................... 3 Thomas Arthur (Tom) Cain 1871 - 1926
....................... +Florence Maud Salisbury 1880 -
................... *2nd Wife of Thomas Arthur (Tom) Cain:
....................... +Ann Jane Green 1870 -
................... 3 John Lewis Cain 1873 - 1950
....................... +Mrs Shimmin
................... *2nd Wife of John Lewis Cain:
....................... +Annie Louisa Rodgers 1872 - 1934
.............................. 4 John (Jack) Edward Cain 1899 - 1975
.................................. +Janet Wilson Davidson 1900 - 1962
.............................. 4 Thomas Roger (Tom) Cain 1901 - 1981
.................................. +Marjorie Cretney
.............................. 4 Louis Alexander(Alec) Cain 1906 - 1985
.................................. +Emmeline (Emily) Callow 1905 -
................... 3 Walter Henry Cain 1875 - 1950
....................... +Margaret Ann Fergusson
................... *2nd Wife of Walter Henry Cain:
....................... +Alice Maud Kennish 1871 -
.............................. 4 Robert Henry Cain 1899 - 1980
.................................. +Malia Tulituliloa
.............................. *2nd Wife of Robert Henry Cain:
.................................. +Elsie May Bigham 1907 - 1980
.............................. 4 Mary Alexandra Cain 1901 -
.................................. +Jack Watterson
.............................. 4 William (Billy) Edward Cain 1905 - 1947
.................................. +Ellen Annie (Nellie) Walker 1902 - 1952
................... 3 Jessie Anne Cain 1877 - 1963
....................... +Edward Freer Clucas 1868 -
.............................. 4 Benjamin Edward Freer(Ed Ben) Clucas 1908 - 1980
.............................. 4 George Philip Lewis ( Louis) Clucas 1910 -
.................................. +Vi
.............................. 4 Frances Mary (Molly) Clucas 1920 -
.................................. +Hilary Curphey - 1990
................... 3 Emily Margaret Cain 1879 - 1946
....................... +John (Johnny) William Gelling 1881 - 1952
.............................. 4 Mary Susannah (Susie) Gelling
.................................. +William Walter Curphey
.............................. 4 John Richard (Jack) Gelling - 1977
.................................. +Ena Adelaide Clegg 1901 - 1958
.............................. 4 Thomas Ellison (Tommy) Gelling
.............................. 4 Agnes Mary Gelling 1905 - 1906
................... 3 Benjamin Caine 1881 - 1957
....................... +Ethel Marie Brown 1886 - 1966
.............................. 4 Dorothy Marie Caine 1911 - 1970
.................................. +Albert Paul Edwards 1908 - 1962
.............................. 4 John Benjamin Philip (Jack) Caine 1912 - 1962
.................................. +Lucille von Fintel 1912 - 1987
.............................. 4 Thomas Robert Caine 1916 - 1975
.................................. +Mary
.............................. 4 Walter Douglas (Doug) Caine 1917 - 1941
.................................. +Mary Jane Smith
.............................. 4 Ethel Dwilla Caine 1922 - 2002
.................................. +Clyde Leon (Stub) White 1913 - 1973
.............................. *2nd Husband of Ethel Dwilla Caine:
.................................. +Donald Louis Klausner 1928 -
........ 2 Elizabeth Jane Cain 1839 - 1902
........ 2 Mary Ann Cain 1840 -
........ 2 (Little) Hannah Cain 1843 - 1846
........ 2 John Thomas Caine 1855 - 1931
............ +Emily Brew 1861 - 1933
................... 3 Unknown Caine
................... 3 Thomas Arthur Caine 1887 - 1982