Photos on the Facebook page of David Vallerga show a tight‑knit family and a doting father whose kids appeared to adore him. 4 His slain daughter Sydney is seen in one post dressed in pink boots and a “Put a Bow on It” top, sitting inside a large shopping cart. Obtained by California Post4 Facebook photos of David Vallerga show a tight‑knit family and a doting father whose kids appeared to adore him. “Costco runs are sooo difficult for Sydney,” Vallerga gushed. David VallergaThe family killer also posted about warm moments with his wife Lindsay, who also died in the attack.