Boys' names along the lines of ...

[FartyMcTarty]

Seth (was top of the list, buti it's been used by a friend)
Ted (love this, but there's already an Edward in the family; Theodore's a bit much for our common surname!)
Barney (has comic connotations alongside DD's name!)
Fred (ditto Barney)
Frank (ditto Barney!)

Any more ideas please?

Arthur?

Ted is also a derivative of Edmund, if that's wouldn't be too dreadful as a Sunday name, so you could still use Ted.

Also, would Theo on it's own do instead of Theodore

Arthur's on the list. I like Theo, just hot sure about shortening to Ted.

I was going to say Theo too - love it!

Or:
Leo
Silas
George
Wilbur
Linus
Ivan
Wilson
Milo
Amos
Charlie
Evan
Rafferty
Harry
Otto
Rufus
William

It sounds like you like old-fashioned/traditional names and diminutives so you might like:
Arthur
Stanley
Harold
Theodore
Edwin
Simon
Wilfred
Rupert
Ralph
Wilbur
Lawrence
Ernest
Ezra
Philip
Cecil
Raymond
Victor
Walter
George
Henry
Reginald or Reggie
Sidney
Quentin
Montgomery or Monty
Eugene
Gus
Tobias
Winston

If you have a common surname, I'd try to find a less common first name (depending on which area your ds may work in one day, it can be handy to be found easily, e.g. online)

I LOVE Arthur, Frederick, Quentin, Stanley and Linus! All classic, slightly old fashioned but not overused (yet?).

Farty, Is your dd called pebbles? or rubble?

TheSteveMilliband - I thought Wilhemina or however it's spelt (Wilma)

I like Stanley/Stan

Alfred/Alfie
James/Jim
Saul
Hector
Miles
Jerome
Clifford

Ah, probably more likely amck, though think I have it farty . Theo's good, like it. Seth always makes me think of Seth starkadder from cold comfort farm.

Am curious about op's dd name now...

Ned?

It'll be Betty!

It would! Love Ned. Think Theo is quite a possibility now, though toying with the idea of discussing Edward with my aunt - perhaps using it on the birth cert but Ted generally. Wouldn't be The Same Name then!

I hoped it was Pebbles or BamBam