My Great Grand Father was Thomas Moore(born in Lancashire) married Ann Jamieson in 1856. My grand father, Henry, was born 1857,(he changed his name to Muir, after his marriage to Elizabeth McDonald)His siblings were Ann,!959, Jane Irving ,1861, Davis,1864, Thomas,1866, Catherine !867, and Isabella !873.
Understandably there was family discord directed at Henry, for the name change.
So details of the rest of the family are very sketchy.
kilt3d