Gillian Kathleen Mencken, daughter of Tom and Lauri Mencken, Plymouth Meeting, is celebrating her 16th birthday today, Oct. 22. Gillian is a granddaughter of Joseph and Kathy Grabiec, Wilkes-Barre, and Jeffrey and Pat Mencken, Warminster. She is a great-granddaughter of Robert Porter, Cape Cod, Mass.; the late Helen Porter; the late Dr. John Caffrey and Kathleen Caffrey; the late Joseph and Elizabeth Grabiec; and the late Raymond Mencken. Gillian has a sister, Miranda Elizabeth, 13, and a brother, Jeffrey Thomas, 8.