The Collaborative International Dictionary of English v.0.48:
Befall \Be*fall"\, v. t. [imp. Befell; p. p. Befallen; p. pr. & vb. n. Befalling.] [AS. befeallan; pref. be- + feallan to fall.] To happen to. [1913 Webster] I beseech your grace that I may know The worst that may befall me. --Shak. [1913 Webster]