Paul McCartney had a close relationship with Aunt Millie. He was really sort of like a homeboy. Paul McCartney is a man who has really been able to reinvent himself many, many times over. We forget that after the Beatels, Paul McCartney is the one who got himself into band. He was in Wings and Wings whether or not we like it was highly, highly successful.
This was the band incorporated also his wife Linda who was a vegetarian. First of all, not only did he adopt her eldest child Marry from another marriage, he went on to have three other kids with Linda and he took on her vegetarianism for activism and even thought Linda passed away and Paul has subsequently remarried, Paul has continued to be a huge advocate for animal rights and for vegetarianism.
Paul McCartney is Mr. Classy, so after they had the big issue with Janet Jackson and the breast, the next year, the Super Bowl committee brought in Paul McCartney to restore class t the Super Bowl halftime show. So, as far as the Beatels go, he is probably the most enduring musically.