GOSE - Westphalia: WEIFAN - Westphalia

Based on the following information, what other sources or areas would I have to research? FRIEDERICK GOSE; born in Westphalia, Prussia, 3 Nov. 1819; spent three years in the army, and on the 25th of March, 1848, left the Fatherland for America, and came through New York City, NY in 1848; a tailor by trade.
   
  His wife was Elizabeth WEIFAN (WERFER, WHIFFEN) also from Westphalia, Prussia - b. 4 Feb. 1826. Elizabeth's mother came with them - Elizabeth (Eliza Beth) WERFER (WEIFAN), b. 1789.
   
  Deborah - Wisconsin USA