The Collaborative International Dictionary
Wheresoe'er
Wheresoe'er \Where`so*e'er"\, adv.
Wheresoever. [Poetic] ``Wheresoe'er they rove.''
--Milton.
Wiktionary
wheresoe'er
conj. (context literary English) Wheresoever; used as a trisyllabic alternative to the tetrasyllabic wheresoever.