The Collaborative International Dictionary of English v.0.48:

Pertain \Per*tain"\, v. i. [imp. & p. p. Pertained; p. pr. &
   vb. n. Pertaining.] [OE. partenen, OF. partenir, fr. L.
   pertinere to stretch out, reach, pertain; per + tenere to
   hold, keep. See Per-, and Tenable, and cf. Appertain,
   Pertinent.]
   1. To belong; to have connection with, or dependence on,
      something, as an appurtenance, attribute, etc.; to
      appertain; as, saltness pertains to the ocean; flowers
      pertain to plant life.
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            Men hate those who affect that honor by ambition
            which pertaineth not to them.         --Hayward.
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   2. To have relation or reference to something.
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            These words pertain unto us at this time as they
            pertained to them at their time.      --Latimer.
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