1847 Land Book Terms

[Sinann]

I didn't notice where the Mc was, I would think that is their surname and the second surname is how to tell them apart, perhaps a wife or mother's maiden name. They probably all have the same first name but it is odd it's not listed.

[hallmark]

Any that I found were sons named after their father so Mc Robert Baliey was Robert Bailey's son.
If the 2 were alive in same townland then Jun and Sen were used.

[calcinare]

Thank you all for the feedback!

[aghadowey]

Any that I found were sons named after their father so Mc Robert Baliey was Robert Bailey's son.
If the 2 were alive in same townland then Jun and Sen were used.

Not always- senior and junior were often just the designate the older and younger of two men with the same names in a townland. Here's a made up example but there doesn't have to be a blood relationship between Sen. & Jun.-

John Smith (born 1820) and his son John Smith (born 1850) appear in records as Sen. & Jun.
John Smith Sen. (born 1820 died in 1890) so John Smith would be listed without Jun. except-
John Smith (born 1850) has a nephew (born 1875) also called John Smith. So,
John Smith (born 1850) is now John Smith Sen. and his nephew John Smith (born 1875) becomes John Smith Jun.

[hallmark]

and why those writing up the books used names/nicknames to differentiate those with same names