In the 1901 Census @ #9 Henry Street, there is no THOMAS, except the father, unless I'm going blind. A
Frederick 15 and the other's are there. Thomas 43 was born in England all the others in Galway.
I do not find any other Thomas on Blackmore Street or in Galway but the father. 1901 or 1911. Perhaps the Thomas Blackmore that travelled with Frederick was a cousin not a brother?
The only Blackmore in Galway in 1911 was a John Blackmore age 11 who is a student at the St. Joseph's Industrial School, Rahoon, Salthill. www.familysearch.org
: No parents names listed
Thomas Blackmore Oct-Dec 1882 Galway
Vol.4 Pg. 242 GS101058/004193459
Anne Mary Jan-March 1887
Christopher Louis 1Oct-Dec 1896
Amelia Aloysius Oct-Dec 1893
Eliza Jane Jan-Mar 1892
Albert John (Blackmoor) Oct-Dec 1889
Frances Stephen Jan-Marh 1901
Perhaps Thomas went somewhere else? England maybe?
19l1 UK Census:
Thomas H. Blackmore age 37, born Ireland, living Plymouth, Devonshire
1891 UK Census:
Thomas Blackmore age 17 born Ireland, Newphew living
Tavistock, Milton Abbott Devonshire
Hope this is all correct and is of some assistance.