The 1901 Census was published in 2002. For reasons of privacy, censuses are only published 100 years after they were taken. Here are a few entries in the 1901 Census for the Chillas families.
Parish of Drumoak
At Mosside, Candyglerach
Name AgeBorn
Mary Chillas Crofter Head 55 Daviot
Johanna Chillas Niece 18 Drumoak
Alexander Chillas Nephew 3 Woodside
Francis McKenzie Boarder 5 Monquhitter
Agnes Munro Boarder 42 Not Known
This is Mary Chillas b. 1845 to James Chillas and Margaret Hardie. Johanna is the daughter of Mary's sister Jane. Alexander is the son of Mary's brother John Chillas. I can find no information on Agnes Munro but she is described in the census as a "lunatic".
Parish of Rayne
At Hunthall
James Durno Head 34 Farm Servant Rayne
Maggie Durno Wife 29 Drumoak
James C Durno Son 4 Drumoak
Mary C Durno Dau 2 Rayne
This is James Durno b. 1866 to John Durno and Janet Tocher and his wife Margaret Thompson Chillas b. 1873 to Mary Chillas above.
Margaret Thompson Chillas, my great grandmother, born 1873 Drumoak, m James Durno 1896, Oyne, died 1959, Insch