Hi Loops,
I just found this for you in a book - The History and Traditions of Clifton by Alfred Gaskell........ it looks like the Knowles lived in the house, they owned the coal mines and built the WW1 war memorial to the miners at the top of Agecroft Road, which my two great Uncles are remembered on, there is a full list of men on my website under the War Memorials of Swinton and Pendlebury page, If any one is looking for relatives honoured on war memorials in this area.
bye for now
Lizzie