Willimus was born in 1576 and his christening took place on May 13th, 1576 in Ashdon, Essex, England.1 Willimus' father was Johannis Barker and his mother is <Unknown>. His paternal grandfather was Johannes Barker and his paternal grandmother is <Unknown>. He had two brothers named Thomas and Edwardus. He was the oldest of the three children. Willimus is no longer alive.