There are no references to place Moriantum in relation to any other places. It is northward of the narrow neck on the eastward portion of the narrow neck, but in close proximity to the narrow neck.
Commentaries (
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MORONI 9:10 [9:9]: And notwithstanding this great abomination of the Lamanites, it doth not exceed that of our people in Moriantum.
Commentary: This verse references the places of Moriantum and the narrow neck. The term 'our people' refers to the Nephites. The lands controlled by the Nephites at this time were northward of the narrow neck. The phrase 'our people in Moriantum' indicates that Moriantum is in the possessions of the Nephites, which would be northward of the narrow neck.
MORONI 9:11 [9:10]: For behold, many of the daughters of the Lamanites have they taken prisoners: and after depriving them of that which was most dear and precious above all things, which is chastity and virtue; and after they had done this thing, they did murder them in a most cruel manner, torturing their bodies even unto death; and after they have done this, they devour their flesh like unto wild beasts, because of the hardness of their hearts; and they do it for a token of bravery.
Commentary: This verse references the places of Jordan, Moriantum, and the narrow neck. The land of Moriantum is close enough to the possessions of the Lamanites to kidnap people. Unless the Lamanite armies took their families with them when battling the Nephites and did not protect their families very well, the phrase 'daughters of the Lamanites' indicates the land of Moriantum is in proximity to permanently settled Lamanite lands. This would put it in proximity to the narrow neck. This verse is also in an epistle written by Mormon while he was in Jordan after being driven there by the Lamanites. The Lamanites had driven Mormon and his people out of the western parts of the land north of the narrow neck, so the only place left where a Nephite city would still be intact and in proximity to permanent Lamanite cities would be eastward of the land of Jordan. This also indicates that the Lamanites had not yet captured Nephite cities north of the narrow neck on the eastern portions of the narrow neck.
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