Hi Finne
I can give you some info re Peter Gillan/Gillon b c1823 IRL :
Peter Gillon b 1823 IRL d 28/12/1883 Western Infirmary, Glasgow LNK
m1 Nov 1843 Duntiocher DNB
Ann Keenan b c 1827 IRL d 28/6/1865 Orchard St (now Vine St) Partick LNK
___ Thomas Gillan b 1846 OK DNB
___ Francis Gillan b 1848 OK DNB
___ John Gillan b 1850 OK DNB
___ Peter Gillan b 20:30 - 27/2/1857 Wilkie's Land, Main St (now Dumbarton Rd) Duntocher DNB
___ Hugh Gillan b 20:55 - 27/2/1857 Wilkie's Land, Main St (now Dumbarton Rd) Duntocher DNB
m2 1/12/1867 St Joseph's Chapel, Milton, Glasgow LNK
Euphemia Wilson b 1832 Barrhead RFW d 3/9/1883 Walker St., Partick LNK
___ Euphemia Gillan b 11/5/1867 Maryhill, Glasgow LNK
___ Isabella Gillan b 11/1/1870 Maryhill, Glasgow LNK
___ Mary Gillan b 7/3/1873 Maryhill, Glasgow LNK
___ Peter Gillan b 1876 Maryhill, Glasgow LNK
My wife is descended from Hugh Gillan (b 1857)+ Mary Brown m 10/7/1878 St Patrick's RC Chapel, Anderston, Glasgow LNK.
Hope this is useful
Les