I don't know of any called Tom but there is a rose called Silver Anniversary and one called Silver Wedding Celebration. Try the rose locator website for a stockist....

There's an evergreen shrub that bears fragrant flowers called Tom Thumb (Pittosporum tenuifolium 'Tom Thumb').

there is also a fuchsia called Tom Thumb.
There is also a Tom Pouce but cant remember what flower it is.

From a Google search, Tom Pouce is a lily

There is a rose called 'Tom Tom' and Cotoneaster ‘Tom Thumb’, and there is a cherry tomato 'Tom Thumb.