Given his mother didn´t change her surname when she married, isn´t it equally possible that he got her surname? Lorcan Lovegood. Or possibly even a double name: Lorcan Lovegood-Scamander. He´s only ever referred to by his first name in canon, as far as I am aware. And the same goes for his brother.--Rodolphus (talk) 07:07, August 22, 2015 (UTC)

This is old, but I agree. As of 2014 Quidditch World Cup final it was Luna Lovegood and Rolf Scamander so their last name is unknown unless there has been a new reference since then? --Ironyak1 (talk) 03:09, May 11, 2017 (UTC)