William Behr Jenner is your step-nephew and he is the son of Valerie Pitalo and Burt Jenner and brother of Bodhi Jenner and Goldie Brooklynn Jenner and grandson of Bruce Jenner and Chrystie Crownover and nephew of Casey Jenner Brandon Jenner and Brody Jenner and Kendall Jenner and Kylie Jenner and cousin of Francesca Marino and Isabella Marino and Eva Jenner and Luke Marino and Stormi Webster and Aire Webster