I will make a remark here that will perhaps reflect a little light on the minds of some. We are taught to ask the Father when we pray, in the name of Jesus Christ. The ancients as well as the modern revelations ascribe honor, praise, and glory to Christ. We render praise, and honor, and thanksgiving to the Fathers, and the Son, and the Holy Ghost; or in other words, Holy Spirits. This idea may give you a particle of light. I do not, however, pretend to say how many spirits the Lord has sent forth; but the Holy Spirit that Jesus promised to his disciples, the ancients enjoyed, and so does every man who understands the way of the Lord and has had committed to him the Keys of the Everlasting Priesthood; they are exhorted to seek and enjoy a Holy Spirit. It is not a matter of moment to me how many other spirits there are; but, brethren and sisters, let you and I seek diligently to possess the Holy Spirit of the Lord Jesus, and then if there are myriads of unholy spirits around us we are prepared to discern the difference.
~Brigham Young
from The Essential Brigham Young, 08, “When I Contemplate the Subject of Salvation”, pg. 79-80