Margaret Compagni

About 1535, [Compagni] sired, by an unknown woman, probably English, & perhaps one of his servants, an illegitimate daughter, Margaret Compagni; named in her father's will, 1561, as his "...dear natural daughter" and wife of John Baptist Castillion, whom he made overseer of his will.

In April 1558, Margaret Compagni, by then the widow of Lazarus ALLEN, illegitimate son of Sir John ALLEN, P.C., Lord Mayor of London, married 2ndly, Giovanni Battista Castiglione, Master of the Italian Tongue to the Lady Elizabeth Tudor, & Groom of her Privy Chamber when she became Queen.

References

• https://www.findagrave.com/memorial/38013087/bartolomeo-compagni
• http://www.oxford-shakespeare.com/Probate/PROB_11-31-16.pdf
• https://en.wikipedia.org/wiki/Giovanni_Battista_Castiglione