Leena-Maaria Kantlin-Weaver was born in Rauma, Finland and started playing the violin aged 3. As a teenager, success in the Toivo Kuula Competition led to a concerto appearance with the Ostrobothnian Chamber Orchestra. She subsequently won a place at the Sibelius Academy in Helsinki to study with Lajos Garam, completing her Masters Degree in 2004 before continuing her studies with Lydia Cevidalli at the Conservatorio di Giuseppe Verdi.
Since 2005, Leena has been a member of the first violin section of the Orchestra of the town of Hyvinkaa, where she was also appointed as a violin teacher within the Music Institute in 2007. Leena has recently moved to England where she plans to work as a freelance violinist and violin teacher at Cranleigh School in Surrey. She is married to Kevin and has a talent for knitting beautiful warm booties for babies.