I hope it is the same person. Let me know what you think though.
The Thomas Garment I have was born abt 1811 and died abt 1892. The time of birth isnt far off your one. I have got his parents as being James Garment 1773-1850 and his mother as being Elizabeth
Judge 1778-1850. They married in 11th Dec 1798 at Tring and had 6 children (Fanny b abt1799, Phoebe 1802, James b abt1810, Thomas b abt1811, John b abt1815 d1879, Martha b abt1816)
My family follows down John Garment's line until you get to my Grandmother and Great Aunt who were/are the last Garments in the line as far as I have found.(Excuse the punn)
Anyway, let me know if you think this may fit in with you.It would be great if it does. I will attempt to update my public tree at some point today (hopefully) so you can take a look.