Henry Quinn - What is going on?

[aghadowey]

I would also query McGee/McGuigan.

LDS database has an extract of the Dec.1870 Quinn/McGee marriage. They also have a death record for the following-
Mary Johnston, died 21 Mar.1844, daughter of Henry Quinn & Margaret Ann McGuigan, born 23 Jan.1872 Ireland. The informant was her son and in view of the corrections on the certificate it's possible the information was not entirely correct.
https://familysearch.org/ark:/61903/1:1:FLVT-G5J

GRONI's database does not show an exact match for this Mary Quinn. However, there is a birth registration for Mary Quinn 23 Feb.1872 Londonderry district (Londonderry Urban 2 sub-district)- mother McGee. LDS extracted birth gives father as Patrick Quinn-
https://familysearch.org/ark:/61903/1:1:FP2Q-6YL

[annclare]

From Rootsireland 
Name:   Mary Quin   Date of Birth:   19-Jan-1872
        Date of Baptism:   20-Jan-1872
Address:   9 Leeson Street   Parish/District:   ST. PETER'S, BELFAST CO ANTRIM
Gender:   Female   County   Co. Antrim
Denomination:   Roman Catholic
Father:   Henry Quin   Mother:   Margaret Jane McGuigan
Occupation:      
Sponsor 1 /Alice Magin

annclare

[aghadowey]

Here's the page from the baptismal register- the mother is Margt Anne McGuigan:
http://registers.nli.ie/registers/vtls000633214#page/31/mode/1up

Leeson St. is off the Falls Road. 1868 directory the occupant of #9 was listed as John Reilly & 1877 it's Hugh Taylor.
http://www.lennonwylie.co.uk/Lcomplete1868.htm
http://www.lennonwylie.co.uk/Lcomplete1877.htm