The ghosts of Christmas Past, Present and Yet to come
In total the three Ghosts (plus Marley) visited Scrooge all in one night
The foretold ghosts were The ghosts of Christmas Past, Present and Yet to Come
In one night three ghosts visited him.
Marley appeared to Scrooge and warned him about changing his behavior. Marley also told Scrooge he would be visited by three ghosts.
There were four ghosts that visited Scrooge. The first ghost to come was the ghost of Scrooge's business partner, Jacob Marley. He was followed by three others, the ghosts of Christmas Past, Present, and Yet To Come (a.k.a Future).
The age is never mentioned but its assumed that he was about 62 years old
Marley tells Scrooge that he will be visited by three Ghosts the first as the clock strikes one in the morning
the ghosts of Christmas past present and future
The ghosts of Christmas past, present and yet to come
The ghost of his old buisness partner Jacob Marley.
Christmas Eve
When Marley's ghost visited Scrooge he warned him about the ghosts and his behaviour.