Andrew Olsen | Ole Olson - Risor

Hi I'm looking for information on Andrew Olsen born in Risor, Norway around 1852, with parents Ole Olson and Mary Christensen (uncertain of surname). Around 1879 he emigrated to New Zealand and settled in Mauriceville, marrying my great-great-great grandmother Randi Johanne Hansen (nee Andersdatter) in 1909. Andrew died on 19-May-1915 in Mauriceville with no children. I'm looking for his relatives to try to understand whether he emigrated with them, as well as trying to work out if he already knew Randi's first husband or family Kristian Hansen who died in London - see earlier post /forum/kristian-hansenhans-elias-colbensen/