T'Mark imm. date for family around 1877-1884?

I have hit a wall locating the immigration of my great grandmother and her son from Telemark. Some information: Ggrandmother Anne Cathrine (“Trine”) Olesdatter (records with Hulversen and Olesen in US) b 28 Dec 1852 in Brevik Telemark (there is something written at the far right column that may indicate she was born in Bamble? sorry, cannot read much of it; parents were from Bamble) c 24 Jul 1853 Telemark http://www.arkivverket.no/URN:NBN:no-a1450-kb20051011060731.jpg fa: Ole Petter Johnsen (Hugger) mo: Karen Jorgine Isaksdatter m (1) 5 Jun 1876 in Brevik to Arbeidsmand Anders Halvorsen http://www.arkivverket.no/URN:NBN:no-a1450-kb20061108310644.jpg Husband (1) Anders Halvorsen was born 18 Jul 1852 in Kaasa, Bø, Telemark. Son of Halvor Pedersen and Margith Hansdatter http://www.arkivverket.no/URN:NBN:no-a1450-kb20051011050494.jpg Son from this marriage Isak Andreas Halvorsen (father listed as sømand at christening) [NB: In US, son is known as Isaac or Ike Andrew Hansen -- he adopted surname of Trine’s second husband] b 29 Jan 1877 in Brevik, Telemark c 18 Mar 1877 in Brevik, Telemark http://www.arkivverket.no/URN:NBN:no-a1450-kb20061108310543.jpg On 3 Nov 1883, she married (2) Jens Peder Hansen in the Town of Hutchins, Shawano County, Wisconsin (Shawano County Record of Deeds, Marriages for 1883). She was married as “Anna C. Hulversen”. Family story says Anders Halvorsen died by drowning in Norway (but I have not found death registered), and her brother sent her and Isak money to come to Wisconsin. However, I have not found the dates. I have searched different name combinations for the period for 1877-1884 and turned up nothing in logical choices of Telemark or Oslo records. Many thanks to anyone who can lead me to: 1. Death date for first husband Anders Halvorsen: which will have a strong bearing on arrival of Trine and Isak, either together or separately 2. Departure for Anne Cathrine Olesdatter / Olesen / Halvorsen and for Isak Andreas Halvorsen / Andersen (I have searched the above combinations). Thank you!