Upon Mr. Ian Brown's gave your email address, I have reached you regarding our business.
Is this correct?
No. kumenglish Upon Mr. Ian Brown's gave I read it first as a grave marker.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
No.
kumenglishUpon Mr. Ian Brown's gave
I read it first as a grave marker.
Upon Mr. Ian Brown's grave was written "Rest in Peace."
You can't make a prepositional phrase the subject of a sentence.
You can't use a possessive as a subject, either. The verb "give" takes two objects:
Mr. Ian Brown gave me