If it is permanent marker, then the folks at this site suggest bug spray, Coppertone Spray SFP30, Coppertone water babies spf 40, Chrome by Azzaro mens aftershave, Tag body spray, Hawaiian Tropic sunblock spf 45, Avon’s Skin So Soft body spray, or Off Skintastic Bug Spray. Whatever solvent is in them also dissolves the marker ink. Personally, I use Goo-Gone to remove marker from book covers.
In any case, whatever you choose to try, first try it on an inconspicuous part of the furniture, to be certain it won’t also remove the dye in the leather.