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married Sept Quarter of 1900 in Leigh, Lancashire
Vol 8c Page 452
Martha Frances Fairhurst
Thomas Henry John
You probably should send for the marriage record. It would tell you Thomas' father's name and I think his age - unless the English ones just say "of full age" like most of the Irish ones.
Then see if you can find his birth or at least find him with his parents on a census. Then you'd have something to narrow him down in the US.
If he died in the US and the state records are online, most of them are supposed to include parents' names by the time Thomas would have died. Of course if no one in the US knew him well, the parents' names might be left blank.
Did she remarry Mar Qtr 1919 in Leigh to Thomas Bowker?
Vol 8c Page 361
Ask "Why? Did she know by then she was a widow?"
From what I see, Martha was born about 1880 in Leigh, but that doesn't help much with Thomas' age.