Dumbledore defeated Grindelwald in a legendary duel He thought it was impregnable. As Grindelwald became more infamous, Dumbledore faced him down. In 1945, in a duel for the ages, Dumbledore defeated him, leaving Grindelwald imprisoned in Nurmengard.
It is learned that Grindelwald was still alive, though imprisoned in the highest tower in Nurmengard, the prison Grindelwald himself built to hold those who opposed him. Grindelwald had actually adopted the Deathly Hallows symbol for his organization.
We're not really given much information about what Grindlewald did leading up to the famous duel with Dumbledore. Voldemort was more powerful than Grindelwald because: Voldemort's bloodline was far more powerful. He was the last descendant of Salazar Slytherin.
Put simply, Dumbledore is more skilled than Grindelwald (which he has stated in Deathly Hallows himself) hence winning the wand was possible. He beat Grindelwald and won the wand's allegiance where the wand recognized the one who was more powerful and skilled.
Though he'd turned up once in the Harry Potter novels, Grindelwald was more of a has-been, a forerunner to the real evil of Voldemort. Regarding his family, Tom Riddle is a Muggle on his father's side and a Gaunt through his mother.
Divorced or widowed men can be “sealed” (married for eternity in Latter-day Saint temples) to multiple wives, while such women generally can be sealed only to one husband.
Woodland Mansions are made to be very rare and difficult to find and they spawn about thousands of blocks away from the world spawn point. They are the rarest spawning naturally generated structure in the game and are even rarer than a mushroom fields biome.
In regular Minecraft, we have about 1~infinite amount of woodlands mansions that can spawn at once, but the chances are still very low. The max that can spawn is about 15, but that is in special cases. The max that can spawn in a world is 3.