It was from this Flathead tribe that the first Indian delegation was sent to ask for teachers. Three of their number volunteered to go with Gray to the States in 1837 to urge their claims for teachers to come among them. The party reached Ash Hollow, where they were attacked by about three hundred Sioux warriors, and, after fighting for three hours, killed some fifteen of them, when the Sioux, by means of a French trader then among them, obtained a parley with Gray and his traveling companions,--two young men that had started to go to the States with him. While the Frenchman was in conversation with Gray, the treacherous Sioux made a rush upon the three Flatheads, one Snake, and one Iroquois Indian belonging to the party, and killed them. The Frenchman then turned to Gray and told him and his companions they were prisoners, and must go to the Sioux camp, first attempting to get possession of their guns. Gray informed them at once: "You have killed our Indians in a cowardly manner, and you shall not have our guns," at the same time telling the young men to watch the first motion of the Indians to take their lives, and if we must die, to take as many Indians with us as we could. The Sioux had found in the contest thus far, that, notwithstanding they had conquered and killed five, they had lost fifteen, among them one of their war-chiefs, besides several severely wounded. The party were not further molested till they reached the camp, containing between one and two hundred lodges. A full explanation was had of the whole affair. Gray had two horses killed under him and two balls passed through his hat, both inflicting slight wounds. The party were feasted, and smoked the pipe of peace over the dead body of the chief's son; next day they were allowed to proceed with nine of their horses; the balance, with the property of the Indians, the Sioux claimed as part pay for their losses, doubtless calculating to waylay and take the balance of the horses. Be that as it may, Gray and his young men reached Council Bluffs in twenty-one days, traveling nights and during storms to avoid the Indians on the plains.