Conversation so far:
where was Edward Plunkett, 18th Baron of Dunsany born?
Edward Plunkett grew up at the family properties.
Who were his parents?
John William Plunkett, 17th Baron of Dunsany (1853-1899), and his wife, Ernle Elizabeth Louisa.
Did he have children?
CANNOTANSWER.
anything else interesting?
His mother was a cousin of Sir Richard Burton.
Did he come from a good family?
Edward Plunkett (Dunsany), known en famille as "Eddie," was the first son of John William Plunkett, 17th Baron of Dunsany .

Question: did he have any siblings?
Self-contained rewrite: did Edward Plunkett have any siblings?