Hello Jay, I see a marriage in 1822 of a Joseph Leech to an Ann Hoey in Monasterboice church (nearby) her address is given as Yellow Gap which is in Termonfeckin on the Drogehda Road if Google maps are correct. The parents names are not given nor is his address, the witnesses are Patt McGuirk and Patt Leech. The date is 16th July. You should be able to find it here but can only search by month and year and then read, not always easy. https://registers.nli.ie/
However there is also a local website listing gravestones inscriptions and your information is there, assume you are aware of it but here it is anyway http://www.termonfeckinhistory.ie/ and a good site on Louth is http://jbhall.clahs.ie/
There were a number children, I found 7 between 1820 and 1840, none later, this included twins in 1835 Catherine and Joseph; also James in 1839; Anne in 1829; Brit in 1832 I notice witness was a Brit Healy suggests a link to me). Mary in 1827 and your man in 1824, the few entries I looked at all had Yellow Gap as the address.
There was a Garvey's Cash and Carry (shop wholesaler) on the Termonfeckin side of Drogheda until recent times. Out of interest the name is from Termon for a well and Feckin as a Christian name, the current church was built about 1883.
There are two Facebook pages may interest you, apply to join if interested, Louth Genealogy and Drogheda Down Memory Lane - Lost Families if you are looking for living relatives, neither is overly active, I have a friend in Termonfeckin and will contact him but it will be about a week and ask if he knows anything, I am not overly familiar with Termonfeckin which recently is experiencing a bit of a building boom, it is a lovely little village still though.
I used Roots Ireland a subscription site to locate the information, hence did not look at everything.
Regards
Pat