Hi Peggy, Your Duncan had a brother Hector who is my great grandfather
Duncan was born in 1848 and died 2/6/35 buried in Perryton Tx Agnes was born in 11/26/1854 and died in 1/3/1887, buried in Odebolt Ia They were married on 1/10/1878, after Agnes died Duncan married her cousin Mary on 2/19/1889
Duncan and Agnes had 5 children all born in Odebolt Edward:12/5/1878 -2/6/1886 buried Odebolt Ia Alexander(unmarried): 10/31/1880 - 2/6/1935 buried Perryton Tx Duncan Lorn(unmarried) 4/5/1882 - 3/22/1969 buried Perryton Tx John Arthur 10/4/1884 - 2/10/1886 buried Odebolt Ia Donald Ray(no children) (Dan)
Duncan and Mary had 1 child John Archibald(unmarried) 8/3/1892 - 6/17/1970 buried Perrton Tx
Based on the above it seems none of Doncan's children had any children of their own.
Duncan's parents are Alexander1817 - 10/16/1898 buried Odebolt Ia M. McAlister buried Scotland
Alexander's parents are: Duncan 1795-1859 buried Argyle, Il Mary McWilliams buried Scotland
That is as far back as my information goes, if you have more I'd love to have it. Jay