Under California law, a birth must be registered before the baby turns one, which will be in three days time. Poignant: The couple have named the girl after Maya's later mother Minnie Riperton, who died aged 31, pictured here in 1978 a year before her death with her daughter Maya, son Marc and husband Richard.
Gravel as a cause of death could be kidneystones. If a husband and wife both died of it....could it possibly have been environmental? Maybe something they were eating? The reason they both had it is a guess...but gravel usually refers to a type of stones in the body.
If gravel lands on a mob or the player and covers their head, it will suffocate them until they destroy the block, move out of the block or die. If falling gravel lands in the space occupied by a non-solid block, (such as torches, slabs, rails, or redstone) or soulsand, it will break and turn into a gravel item.