Rich's side of the family

DH Mom and Dad, ex-brother in-law A and nephew B
My brother in-law W, my sister in-law R and nephew A
My niece A with her boyfriend B, my niece T
My sister in-law R and nephew A

My niece C, her husband M. My brother in-law B and sister in-law S, C's parents. My sister in-law K, her ex-husband A and my nephew B