How hard is it ?

[Lensmeister]

Thanks guys.

Tomorrow is going to be a interesting day at work lol

[hallmark]

I just remembered, We have no proof the Mulhollands were from Fermanagh.
No real trace of them yet, just a few leads I found in Derry, but I haven’t got back to look at them again.
The records I found in Irvingstown were for the Hendersons.

Just a matter of looking at L/Derry Districts

Ballymoney Coleraine Londonderry Magherafelt  and Newtown Limavady  [Limavady]  on Link I posted!

C Reg Death results for John Mulholland from 1876 to 1921   http://www.rootschat.com/links/01my8/

[hallmark]

Obviously discounting those of completely wrong age at Death!

[hallmark]

Then alter search and look for wife's Death.

[Maiden Stone]

As for the others, my plan of attack would be to look for the names of the fathers in Griffith's Valuation, and hope you are right about them being from what is now N. Ireland, since that narrows things down to 6 counties.

In Griffith's Valuation of Ireland, (1850s-1860s) the surnames Henderson and McIlroy occur together in the same parish in many parishes in all 6 counties now in Northern Ireland.

Remember that there are 9 Ulster counties. 

[Maiden Stone]

I noted that a couple may have been married about 1740 are there no registers around then anywhere ?

I didn't realise you'd got back that far. I've missed a lot in 24 hours.

Simple answer to your question is "not many". Depends on where and which religious denomination. See section on church records on Irish Genealogy Toolkit website for a detailed explanation.

[RJ137]

Found James- although I think he was born before 1864- died 1934 in Ohio, U.S.A.
https://www.familysearch.org/ark:/61903/1:1:X67F-279

Possibly James P. Henderson with wife Sarah in 1930 census-
https://www.familysearch.org/ark:/61903/1:1:X4C9-92N

1920 census with children Frances, Lawrence P. & Julia L.-
https://www.familysearch.org/ark:/61903/1:1:MD1S-Z28
1910 census- same 3 children-
https://www.familysearch.org/ark:/61903/1:1:ML6Z-XDZ

1900 census says James Henderson born May 1859 which is probably more accurate (wonder if his baptism in Ireland can be found)- other 2 children are Lillian & Leo-
https://www.familysearch.org/ark:/61903/1:1:MM6J-F8G

James Henderson

The Circleville Herald
Circleville, Ohio
Saturday, September 01, 1934 - Page 1

Obit: https://www.newspapers.com/clip/25043820/james_hendersonobit/

====

James's wife Sarah (nee Powell) died in 1939

Obit: (see attached below)

Find A Grave: https://www.findagrave.com/memorial/43181859

=========================

The Newark Advocate
Newark, Ohio
Tuesday, January 10, 1967 - Page 17

Lawrence Henderson
Lawrence P. Henderson, 71, Rt. 2, Nashport, died at 4:38 p. m. Monday In the Licking County Memorial Hospital. He had been ill for three years. He was born In Perry County, July 16, 1895, to James and Sarah Powell Henderson. He had lived in this area for 45 years. Formerly employed as a general foreman with Buckeye Pipeline Construction Co.; be retired six years ago. He was a member of Blessed Sacrament Church, American Legion, Veterans of Foreign Wars, and a life-member of Elks Lodge No. 391. He served as a sergeant In World War I. arrangements later.

[oldohiohome]

A few things I found this evening:
At familysearch I found these, but I couldn't find them at Scotland's People, so I don't know what the image says:

Patrick Mulholland
Scotland Census, 1881
Name:   Patrick Mulholland
Event Type:   Census
Event Date:   1881
Gender:   Male
Age:   30
Registration District:   Dennistoun
County:   Lanarkshire
Birth Year (Estimated):   1851

Bridget Mulholland
Scotland Census, 1881
Name:   Bridget Mulholland
Event Type:   Census
Event Date:   1881
Gender:   Female
Age:   29
Registration District:   Dennistoun
County:   Lanarkshire
Birth Year (Estimated):   1852

----------

[oldohiohome]

This is the only marriage of Bridget Henderson's siblings that I found in Irvingstown Registration District.
Catherine then ends up in the same part of Glasgow as Bridget:

-----------
- Catherine Henderson (1 June 1846 - )
    + Charles Moran
      md November 13, 1874, Irvinestown
      RC Chapel Whitehill
      she: of Drumduff
      witnesses: Thos Connelly, Francis Irvine
      https://civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1874/11253/8126806.pdf

---------
Scotland Births and Baptisms, 1564-1950
Name:   Mary Catherine Moran
Gender:   Female
Birth Date:   22 May 1881
Birthplace:   Dennistoun, Lanark, Scotland
Father's Name:   Charles Moran
Mother's Name:   Catherine Henderson

https://www.familysearch.org/ark:/61903/1:1:XTXC-Y89

I didn't look for them on the censuses.

------
And I didn't find any deaths for Bridget's siblings in Irvingstown either, so they must have all left  except Sarah, or lived past 1922. The son John could have married elsewhere as well - in his bride's parish.