Many thanks to all for generously sharing your information, and for your kind time and work.

I now continue the search for further information regarding:

Frederick Arthur Collins born c1881
-a definitive (birth?) record linking Frederick to his parents Julia and Thomas
-records from Frederick's birth up to his marriage to V E B Llewellyn in 1904

Thomas Collins
-information concerning Thomas' travels from Cinderford to Elko, Nevada, United States in 1880
-records of Thomas thereafter until his widow Julia remarried William James Parry in 1883

What a journey!