However , Reiner had found success by gaining financial support from Norman Lear , who Reiner knew from All in the Family .
Who had funded production of This is Spinal Tap , with the production to be distributed by 20th Century Fox .
However , Reiner had found success by gaining financial support from Norman Lear , who Reiner knew from All in the Family and who had funded production of This is Spinal Tap , with the production to be distributed by 20th Century Fox .