The following information my refer to your family but requires further checking
There is a baptism in Rathdrum Roman Catholic Parish in 1825 that may be a match
Anne PLATT bap. Aug 16 1825 (F) Jonathan (M) Judy GOGGINS (Sp) James CULLEN & Anty BYRNE
Possible siblings:
1.
Thomas bap. May 14 1818 (F) Jonathan (M) Judy GOGGIN (Sp) John DOHERTY
a. Married Catherine DEVITT Jan 25 1856 Records of baptism for children
i. 1857 Peter & John (twins)
no reference other than baptism b. Married Catherine CARTY Sept 18 1863 Records of baptism for children
i. 1864 James
(alive 1911 died possibly 1933) ii. 1866 Julia
died 1917 unmarried iii. 1868 Maria
died 1890 iv. 1869 Eliza
died 1883 v. 1873 Thomas
died 1873 vi. 1874 John
-? vii. 1876 Catherine
died 1880 viii. 1881 Thomas
died 1900 2.
Christopher bap. May 14 1818 (F) Jonathan (M) Judy GOGGIN (Sp) Daniel & Sarah BYRNE
presumably died an infant as they named a second son Christopher
3.
Luke bap. Jan 02 1821 (F) Jonathan (M) Judy GOGGAN (Sp) Mick FOLEY & Mary CLANCY
4.
Christopher bap. Feb 25 1823 (F) Jonathan (M) Judy GOGGINS (Sp) Michael DOYLE & Mary BYRNE
a. Married Bridget RUSSELL c1854 Records of baptism for children
i. 1856 John Sponsor at Baptism Lucas PLATT possibly his brother
ii. 1858 Eliza
iii. 1860 Margaret
iv. 1863 John
v. 1866 Peter
vi. 1870 Bridget
5.
Michael bap. Aug 12 1830 (F) Jonathan (M) Judith GOGGIN (Sp) Edward KIRWAN & Margaret TOOL
Their home address was given as BALLINACOR
On the 1901 census there was a Christopher PLAT living in this townland in Ballinacor
On the 1901 census Thomas’s widow Catherine was living with two of her children in Fairgreen, Rathdrum
They are the only PLAT/PLATTs listed in Wicklow in 1901
By 1911
only James and Julia are listed in WicklowIf you search the Griffiths Valuations of the mid 1800s there is only one PLATT listed c1854 –
named JonathanI cannot see a church record of a marriage for Jonathan PLATT and Judith GOGGINS but you are back at a point of "hit and miss" records if you do not have a specific parish to refer to
Hope this helps a little