It seems that the spelling of McFadyen depended on the scribe as most folks were illiterate when it came to Census and Parish records. I've seen McFadzean, McFadyin , and McFadzen used all within the same family
Does'nt make it easy Thanks any way Donna Dof
just in case any of these are yours
archibald mcfadzean,died 31 mar 1837,barber,age 56,cause of death gravel
james mcfadzean,died 7 apr 1835,son of james mcfadzean,sailor,age 8 mths,measles
jane mcfadzean,died 1 may 1843,age 13, fever
john mcfadzean,died 14 nov 1843age 1,measles
mary mcfadzean,died 16 oct 1852,high street,age 36,bowel complaint
mary mcfadzean,died 7 oct 1841,isle lane, age 64,consumption
robert mcfadzean, died 7 jan 1844,pensioner,mill street,age 42,inflammation
jean mcfadzen,died 12 mar 1820,daur of john mcfadzen,labourer,age 16,fever
mary mcfadzen,died 17 jan 1824,daur of ...mcfadzen,labourer,age 3,fever