History
Mayday helped Spider-Man of the past to defeat the Sandman, who travelled to her time. Later Mayday talked about this to Peter of her time, who is actually her father. He told her that Spider-Man she met that day was really him back in the days.[1]
Later Mayday met Peter of the past again, when she had to travel back in time to defeat and take back the Lady Octopus.[2]