One of Four

[nshanny73]

said Mrs. LeClerk

Where's #2?  I can't find him

[Kean_1]

R* mentioned it in the 3/18/19 Update ("The Road Ahead"):

Quote

Some other new additions include:

• More A Land of Opportunities Missions: continue Jessica LeClerk’s search for revenge as you explore the path of a Gunslinger or an Outlaw

 

Sounds like there will be similar missions to hunt those others down.