Willow (or "sally") will love this kind of land.
Willow can be grown for fuel, hedging, weaving (living sculptures or harvested shoots) and is a native species (I can't remember which varieties).
Other trees suited to this environment AFAIK are the native mountain ash (or rowan tree, its not an ash tree) with reddish leaves and clusters of red berries (rua / red the source of its name?). This tree had great significance for pre-Christian druidic peoples as a source of "magic" wands, rods for water divining, pilgrims' staves (Friar Tuck / Little John ?) and the cooked fruits were used as dye and flavouring. (the raw fruit is poisonous to humans but not to wild-life).
I don't know if native white-thorn, black-thorn would thrive in a boggy area.
Best of luck.