Looking for Family in Sweden

[Michael Newquist]

I am looking for some help location information about my great grandfather and his family.  
My Great Grandfather's name in Sweden was Karl Johan Johansson Nyqvist. He was born in Umeå, Västerbotten county 06/23/1870. He emigrated to New York in North America 08/16/1892 from Umeå or Stockholm.  
 
His father was Johan Nyqvist born 07/31/1835 in Sunne, Värmland county. The mother was Maria Wilhelmina Wallin born in Piteå, Norrbotten county. They were married 1861.  
 
Children were:  
Carl Johan b 03/18/1862, died 07/12/1862 Albert Emanuel b 09/26/1863, died 06/26/1874 Enoch (Henrik)b10/22/1866 Emma Kristina b 09/18/1868 Karl Johan himself Anna Sofia b 01/22/1872 Maria Thurinna b 07/05/1873 Ester Wilhelmina b 10/12/1875, died 03/26/1877 Axel Emanuel b 04/29/1877 This information is from Sweden census 1880, 1890, 1900 and from a CD called Emibas.  
 
Emma Kristina married and moved to Sundsvall Anna Sofia married, she stayed with her family in Umeå Enoch moved to Skellefteå.  
 
My Great Great Grandfather's name is Johan Nyqvist born 1835 in Sunne, Varmland county Mother Maria Wilhelmina Wallin born 1835 in Pitea, Norrbotten county  
 
Children:  
1. Henrik b 1866 in Umea, sorry I know anything about him  
2. Emma Kristina b 1868 in Umea  
3. Karl Johan b 1870 in Umea  
4. Anna Sofia b 1872 in Umea  
5. Maria Turima b 1873 in Umea  
6. Axel Emanuel b 1877 in Umea  
 
According to the census for 1900 the father and the mother plus Axel Emaunel still lived in Umea at the address Vestra Norrmalm nr 20. The father is owner of a hotel and blacksmith.  
 
2. Emma Kristina was married to Lars Fredrik Hägg and they lived in Sundsvall, Vasternorrlands county and they had two children Karl Emil b 1896 and Gunnar b 1900. Lars Fredrik Hägg was bookkeeper/clerk....  
 
4. Anna Sofia is married to Carl Adolf J:or Astrom (dots on a and o), they lived at Qv Tjadern, Lulea, Norrbotten county. Their child was a daughter Anna Mari b 1899. Carl Adolf Astrom was goldsmith  
 
5. Maria Turima was married to Karl Gottfrid Wikstrom, he was a tradesman. They lived in Umea and had Ruth Maria b 1899 and Karl Oskar Fredrik b 1900.  
 
Any help you can give me in my search would be great. I know my Great Grandfather immigrated to the United States and once he got to the United States he changed his name to Charles Newquist. I look forward to hearing from you and if there is anything I can do to help you in the research, please let me know.