kaluschke family from Freiwaldau

I am looking for any info for the family Kaluschke who lived in Freiwaldau in the 1800’s .

My grandfather was – George Karl Christian Jurgensen – his mother was
Ludowicka Kaluschke born 1863 – her mother was
Amalia Kaluschke who died in 1895

Other family members were :
Heinrich born 1845 emigrated to South Africa via Hamburg – Southampton in 1/11/1891 with Ludowicka .
Hugo Born 1872 emigrated to South Africa via Hamburg – Southampton in 8/5/1897

? Amalia’s mother was Hermine

Wilhelm Kaluschke

Karl Alexander Kaluschke

Julius Kaluschke .