Walt’s birth year was given as 1898 in a 2001 strip, making him 115 in 2013. I don’t know that it really works to try and slip him past the turn of the century, considering that things like his WWI service and Skeezix’s birth are tied to specific dates. Not to mention the fact that Phyllis was married during WWI—to her first husband, Jack Blossom—and there’s nothing about her being older than Walt during their courtship or early marriage.Bumping Walt up to 1902 means he was allowed to adopt a baby at age 19, when he wouldn’t even have been old enough to vote. I think we have to stick with the 1898 date and assume that Phyllis wasn’t much younger. I figure she couldn’t have been born later than 1900.