Baard or Baar Nilsen from Jelsa's family

I have been helping a relative research his family from the Jelsa parish records. I have found the births of Baard Nilsen's and his wife Martha Thormodsatter in the parish records along with Baard and Martha's marriage record. The person I am helping had a few questions that I don't know the answers to: A family tree on the family lists Baard Nilsens name as Baard Nilsen Bandura. The question I have is Bandura a farm name. In the 1865 Census Baar is listed with his wife and the name of the Domicle is Bandeberguren. Possible that is what the person meant with the Bandura? Baard's wife Martha died in 1902 and I have found her death in the Jelsa parish records. The person I am helping was wondering if there is any way he could find where she is buried? Either through a e-mail address in Norway or a phone nbumber in Norway. The children that immigrated from Norway went by the last name of Alveshire and Alveshire. In the 1875 Census from Jelsa they were living on the domicle Skiftevig, Alveskjaer. So I know why they went by the name Alveshere in the United States. The person I am helping was wondering if there is any information on the farm Alveskjaer. After Baard's wife died he came to North Dakota to live with one of his sons so Baard is buried in North Dakota. Martha would be buried in the Jelsa area so that is why he was wondering where he could find information where she is buried. A question I have is with my lack of knowledge on the Jelsa area is that the area of Ombo that is a island? Any help would be great. Thank You