In 1825 Robert Molloy was a teacher at Charity Hall School near Cotton Gin Port, Mississippi.
[Source: Chronicles of Oklahoma]

1827
Minister Present: Robert Molloy from Bigby Presbytery.

Resolved, That an agent be appointed in each Presbytery, and such other agents as the committee may think necessary, for the purpose of receiving and distributing the Rev. Finis Ewing's lectures, receiving payment, and transmitting the same to Mr. Solomon Gullett, one of the book committee, at Fayetteville, Tennessee.

Resolved, That . . . be an agent for the above purpose . . . Robert Molloy, in the Bigby . . .

[Source: Minutes of Cumberland Synod, November 20, 1827]

1828
Minister Present: Robert Malloy from Bigby Presbytery.

Resolved, That Francis Johnston and Robert Malloy, to examine the minutes of the Alabama Presbytery.

Resolved, That all the below mentioned preachers are appointed, and they are hereby required to make personal application to the members of our Church and others, in the districts to which they are appointed, for about fifty cents each in specie or its equivalent, for the benefit of Cumberland College and Charity Hall; and when more than one preacher is assigned to a district, they may divide said district as they may judge most expedient, but must be sure to make the application.

Of Bigby Presbytery, Rev. Messrs. James Farr and James Moore, in the Morgan; Robert Malloy, in the Bigby; Andrew O. Horn and Carson P. Reed, in the Franklin districts.

[Source: Minutes of Cumberland Synod, October 21, 1828]

In 1836 the church paper stated that all the Cumberland Presbyterian congregations in Mississippi had been organized in the preceding five years. At the meeting of Columbia Synod, in the town of Pulaski, Tennessee, on the fourth day of November, 1831, the order was passed for the formation of Mississippi Presbytery. Its limits on the south-west were indefinite; on the south it extended to Mobile. Its original members were to be Thomas J. Bryan, Robert Molloy, Samuel W. Sparks, and Isaac Shook; and its first meeting was to be held in the town of Gallatin, Copia County, Mississippi, the fourth Thursday in April, 1832, Thomas J. Bryan to be its first moderator. Different statements as to who were the original members of this presbytery have been published, but this is the correct list as ordered by the synod. These varying accounts are thus explained: Several ministers from different synods were living in Mississippi, but not enough from any one to form a presbytery. The Rev. S.W. Sparks and the Rev. Isaac Shook, both of Columbia Synod, volunteered to go at their own expense to Mississippi and cooperate with Molloy and Bryan--who also belonged to that synod, but lived in Mississippi--in the formation of a presbytery. As soon as the presbytery was organized it received as members the other resident ministers, and then Shook and Sparks returned.
[Source: McDonnold, B.W. History of the Cumberland Presbyterian Church. Nashville, Tenn.: Board of Publication of Cumberland Presbyterian Church, 1888, page 256]

The Cumberland Presbyterian Church was never strong in Louisiana. At a camp-meeting held by Rainey Mercer and Robert Molloy, near Springfield, on Lake Pontchartrain, in Saint Helena Parish, October, 1831, the first congregation of our people in that State was organized. Here, as everywhere else, the pioneers formed a temperance society when they organized a church.
[Source: McDonnold, B.W. History of the Cumberland Presbyterian Church. Nashville, Tenn.: Board of Publication of Cumberland Presbyterian Church, 1888, page 261]