Basic Premise,
Maximilian I HRE decides to marry one last time after the death of Bianca Sforza. Only candidate that is excluded is Anna of Jagiellon/Bohemia (OTL wife of his grandson Ferdinand I). To whom do you suggest he wed?
My current candidate: Mary of Tudor (OTL Queen of France). Time Circa 1514
Other candidates
Joanna of Naples (OTL candidate to we'd Henry VII) circa 1512
Sophia or Anna of Masovia (circa 1515, maybe as part of the Congress of Vienna)