William Francis Buchanan on January 23, 2020, of East Northport 91 years of age. Loving father of William Buchanan, Susan Velez (Nelson), Catherine Lambros (the late Tony), Daniel Buchanan (Ann Marie0 and Joan Medina (Richard). Cherished grandfather of William, Jaime Leigh, Jessica, Bobby, Denise, Dan, Matthew, Frankie, the late Brian, Preston, Melissa, Coco, Stella, John, Joe, Mike, Julie, Victoria & the late Richard. Adored great grandfather of Justin, Joey, Sean, Sophia, Annabella, Olivia, Jaiden, Kaylee, Emani & Milan. Visiting Nolan Funeral Home, 5 Laurel Avenue, Northport, Monday 2-5 & 7-9 pm. American Legion Service at 7:30pm with Navy Honors. Prayer Service at 8 pm. A private cremation will take place Tuesday.