I've noticed that in several Elizabethan sonnet sequences, when the sonneteer desires to refer to themselves in the title of a sonnet, they always do so in the third person. This is especially noticeable in Henry Constable's "Diana":
Of his mistress, upon occasion of a friend of his which dissuaded him from loving
A friend of mine, pitying my hopeless love,
Hoping by killing hope my love to stay,
"Let not," quoth he, "thy hope, thy heart betray;
Impossible it is her heart to move."
But sith resolvèd love cannot remove
As long as thy divine perfections stay,
Thy godhead then he sought to take away.
Dear, seek revenge and him a liar prove;
Gods only do impossibilities.
"Impossible," saith he, "thy grace to gain."
Show then the power of divinities
By granting me thy favour to obtain.
So shall thy foe give to himself the lie;
A goddess thou shall prove, and happy I!
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Why didn't he write "Of my mistress, upon occasion of a friend of mine which dissuaded me from loving?"