What was the initial reason for a dugout being half buried?
Primarily so as not to obsruct the view of the game from the stands. An argument can also be made that it offers a bit of protection from line-drive fouls.
The rules with Managers being ejected from the game is that they cannot remain in the dugout so they have to go into the clubhouse after the point of their ejection. However they are allowed to watch the game from stadium seats but they have to be in civilian clothes and cannot be close to their team's dugout.
Logically, they can be buried anywhere. Religiously, it depends on what the church decides. . Answer from a Catholic To the best of my knowledge, there is nothing that would forbid a non-Catholic spouse of a Catholic from being buried in the same Catholic cemetery. I believe this would be totally at the pastor's discretion, but there should be no reason that it would be forbidden. But, this is just my opinion, you would need…