Well you did ask, so....
John Fountain, I live on a remote peninsula in the mathematical genealogy which is inhabited almost entirely by semigroup theorists. My siblings still in the mathematical world include João Araújo, Victoria Gould, Mark Lawson, Lucinda Lima, Ana Oliveira and Laila Tunsi, while Peter Hines and Chris Hollings are my nephews.
The peninsula was once thought to be an island, but recent research has established a causeway via Walker to Whittaker, so we are (like just about everyone else!) ultimately descended from Newton. The photo on the right (taken at the Fountainfest in 2006) shows more than half the peninsula's population at the time, including the fountain of wisdom himself and a dozen of my mathematical brothers and sisters! A mystery prize goes to the first person who can identify everybody in the picture.*
Like probably the majority of mathematicians who enjoy occupying the same room as other mathematicians, I have an Erdős number of 3.
* Standard terms and conditions apply. Those featured in the picture and their families are not eligible to participate. No cash alternative. The organiser reserves the right to substitute for the unspecified prize an alternative prize of substantially lower or zero value. Prize must be collected in person from the organiser's office between 10:37 and 10:39 on the second Wednesday following a blue moon in a month with no "r". Nothing mentioned or not mentioned here or elsewhere shall be construed as placing the organiser under any obligation to do anything whatsoever under any circumstances at all.