Hello. I am developing a friends family tree.
Her 2nd Great Grandfather John Carmichael McOstrich was born abt 1833-36 in Cork (no birth/baptism record). I have Census records for him 1851 as a student in Edinburgh with brother Alexander McOstrich, 1861 in Liverpool as a Silk merchant with Andrew H and James B McOstrich (brothers??)
He married Jane Josephine Brown(e) in 1865, father Alexander McOstrich on the marriage record, but from 1881 he appears to drop the McOstrich, and is then known as John Carmichael, living in Dorset, a J.P. in County of Cork, with wife Jane Josephine and family.
Their children are registered as Carmichael not McOstrich.
Can anyone shed any light on this name change........or am I barking up the wrong tree and its just a huge coincidence?