Legacy of the wizard is part of nihon falcom's Dragon Slayer series, which ended with dragon slayer 8: the legend of xanadu.
After that, the game that is most commonly related to the dragon slayer series is The Legend of Heroes series, which are mostly turn based rpg's, Dragon Slayer 6 was the first Legend of Heroes game, though ys, also made by falcom, could be considered more similar to the dragon slayer games like legacy of the wizard.
The order of dragon slayer games is as follows:
Dragon Slayer (never translated i believe)
Dragon Slayer 2: Xanadu (original untranslated i believe, the pc version of the sequel Xanadu Next however is).
Dragon Slayer 3: Romancia (a few versions have been translated including the NES version).
Dragon Slayer 4: Drastle Family (legacy of the wizard in the west, aka the game your glad was put here).
Dragon Slayer 5: Sorcerian (only the DOS version was translated, though is easy to find if you look hard enough for it).
Dragon Slayer 6: The legend of Heroes (Breakout hit of the series, every game but 2 is translated in the series in some form, though even 2 seems to have a translation patch in the works).
Dragon Slayer 7: Lord Monarch (genesis version has a fan translation)
Dragon Slayer 8: The Legend of Xanadu (never translated, but the second game supposedly has a translation in the works).