Hi Sancti, I am researching Mary Tyson (d Kingshouse 1872) & Archibald McDiarmid (d Midmuir, Kilmuir 1870).
They were my maternal g'grandmother (Rachel*)'s parents; and also the g'parents of my maternal g'father (John McGibbon)'s sister's husband John McDiarmid (b1867; father =James McD.*, mother = Janet McCallum**)!
Archd & Mary's chn incl'd: Jean (b1817-<1823), John (b1819-), Margaret (b1821), Jean (b1823), Ann (1823-), James* (1827-, m'd Janet McCallum** b1829 Killin), Thomas (1829? &/or 1831?), Rachel* (b1833 Muckairn; m'd John McDougall 1862, Blytheswood, Glasgow; d NZ 1914), & Arch'd.
1851 census: at Midmoor/Midmuir= Archibald (shepherd), Mary, Rachel* (dau,18) house servant, Arch'd (son,12) herdboy, Donald McKay (g'son, 2, b.Glasgow)
Rachel McDiarmid* m'd John McDougall (bc1828 Luss).
They had 5 chn, b Arrochar and Glasgow, incl Katharine Anne (my maternal g'mother, b1869 Glasgow) who m'd John McGibbon b1865, Knap, Cowal.
John McGibbon's mother, Mary McCallum**b Killin, was Janet's** sister, making James McDiarmid* his uncle by marriage, and he and John McDiarmid (b1867) 1st cousins through their McCallum mothers, while John McD and Katharine Anne were McDiarmid 1st cousins. Then John McD married John McG's sister, so it's a tangled web!
Also, Ann[e] Tyson (my g'mother's g-g-grandaunt; Mary's Tyson's aunt?) had interesting links to Wm Wordsworth & his siblings. She boarded the boys when they were at school, is the "old Dame" of The Preludes, and owned the dog Wordsworth walked when he returned to visit her in the Lake District.
Hoping this is useful and love to hear from you sometime to share more findings,
Anne NZ