Source : Webster's Revised Unabridged Dictionary (1913)

Alphonsine \Al*phon"sine\ ([a^]l*f[o^]n"s[i^]n), a.
   Of or relating to Alphonso X., the Wise, King of Castile
   (1252-1284).

   {Alphonsine tables}, astronomical tables prepared under the
      patronage of Alphonso the Wise. --Whewell.