family member definition [negotiated rulemaking landowner tag version 2]

On the landowner appreciation program the family tag can go to a immediate family member. I was wanting to know if a grandson an son-in-law is a immediate family member?
Answer: 
Immediate Family Member.  Includes wife, husband, child, mother, father, brother, sister, grandparent, aunt, uncle, niece, nephew, stepchild, grandchild, son-in-law, daughter-in-law, mother-in-law, father-in-law, brother-in-law and sister-in-law.  
Answered on: 
Friday, July 25, 2014 - 8:28 AM MDT