Most of the information is available on Scotland's People and only there. It is not a subscription site and is available to everyone.
From the indexes at Scotland's People there are the following statutory certificates
Births
Mary McDougall, mother Annie McDougall, born 7 February 1863, registered in Glasgow, Clyde
Beaton, mmn McDougall*: Isabella 1868, Ann 1869, James 1871, Donald McDougall 1873 (not 1878), all in Glasgow, Milton
James McBride in Glasgow, Gorbals in 1876
Daniel McBride, mmn McDougall, in Glasgow, Milton, in 1879
*Also Christina, 1864, but FS gives her parents as John B and Isabella McD so she is not a sibling
Marriages
Ann McDougall to Alexander Beaton in Glasgow, Milton, 1867
James D McBride to Ann McDougall or Beaton, Glasgow, Kelvin, 1875
Deaths
Alexander Beaton, 35, mmn McKinnon, in Glasgow, High Church in 1874
Ann McDougall or Beaton or McBride, 79, mother's maiden surname McLeod, in Edinburgh, Gorgie and Dalry, 1924
Isabella Beaton, 7, mmn McDougall, in Glasgow, Milton, 1874
James Beaton, 4, mmn McDougall, in Glasgow, Milton, 1875
Donald MacDougall Beaton, 68, in Glasgow in 1941
Christina Macleod or Macdougall, 80, mmn Buchanan, Portree, 1895
and census records
Census 1841, Portree: Malcolm McDougal, 35; Catharine McDougal, 40; Mary McDougal, 14; Flora McDougal, 8; William McDougal, 5; Ann McDougal, 2
Census 1851, Portree: Malcolm McDougald, 47; Catharine McDougald, 50; Mary, 24; Flora, 26, William, 12; Ann, 9 and another family: Donald McDougald, 40; Christy McDougald, 35; Ann McDougald, 11; Flora McDougald, 7; Jessie McDougald, 5; Isabella McDougald, 3; John McDougald, 1.
Census 1861, Portree: Malcolm McDougald, 55; Catharine McDougald, 60; Flora McDougald, 25; Ann McDougald, 20; also another family: Donald McDougald, 50; Jessie McDougald, 18; John McDougald, 10; Alexander McDougald, 8; John McDougald, 80.
Census 1871 Glasgow: Alexander Beaton, 32; Ann Beaton, 31; Ann Beaton, 2. Also, in Portree: Malcolm McDougall, 63; Catherine McDougall, 66; Flora McDougall, 35; Ann McDougall, 27; Kitty Nicolson, 7. (The latter proves that your Ann McDougall is not the daughter of Malcolm McDougall and Catherine.)
Census 1881, Edinburgh: James McBride, 41; Ann McBride, 40; Ann Beaton, 11; James McBride, 4; Daniel McBride, 1.
Census 1891, Edinburgh: James D McBride, 50; Ann McBride, 50; James McBride, 14; Daniel McBride, 11.
Census 1901, Edinburgh: Ann McBride, 59; James McBride, 24; Daniel McBride, 21.
Alexander b.c. 1859, Mary b.c.1867, and Mary Ann Campbell, b.c. 1886, do not appear in any census with Ann McDougall or Beaton or McBride. What is your evidence for their existence?