Portwood Williams Sr. died Aug. 10. He was 98.
His funeral was held Saturday.
"That's why they weren't at Kylie's birthday," a source told People.com about why the couple missed the Sweet 16 party for Kardashian's half-sister, Kylie Jenner. "They brought North, too. Her first trip."
Workers accuse National Zoo of animal mismanagement
Couple calls 9-1-1 over missing hash browns; assault McDonanld's employees