IGI has these two
THOS. LUPTON
Male
Christening: 23 MAY 1812 Dunston, Lincoln, England
Parents:
Father: JOHN LUPTON Family
Mother: ELIZABETH
and one baptised in October 1812, son of Edmund and Elizabeth (IGI has suddenly disappeared, so I can't supply any more details).
The one living with Elizabeth in 1841 and 1851 has a brother called Edmund.
The one living in Martin has a son called John. The one living in Martin is still there in 1871 with wife Ann and son Thomas (although he then says he was born in Dorrington, 6 miles S of Dunston!)
Thomas 59 Cottager and Skinner, Dorrington
Ann 59 Martin
Thomas 27 AgLab, Martin
1861 Martin 2341/65
Thomas 49 AgLab, Dunston
Ann 49
John 25 AgLab, Dunston
Elizabeth 22 Dressmaker
Richard 15 AgLab
Charles 13 AgLab
Susan 11 Scholar
Harriet 9 Scholar
Ann 7 Scholar
Others born Martin
Thomas 18 Carter, Martin is nearby.
Meanwhile in Dunston 1861 (2356/70)
Elizabeth 73 Baker, Dunston
still has Edmund and family, but no Thomas.
I don't think there's too much more to find. I would hazard a guess that John and Edmund who both had Thomases in 1812 were sons of an earlier Thomas Lupton.