House of Lusignan
Aymer succeeded his brother in 1186, and soon after was at the court of Richard the Lionheart, then Duke of Aquitaine and thus Aymer's lord, to receive recognition of his accession. By 1188, Aymer had married Alice of Courtenay, the daughter of Peter I of Courtenay and thus granddaughter of King Louis VI of France. In that year, Alice gave birth to a daughter, Isabella of Angoulême, who married King John of England in 1200. The marriage alliance was sealed by two treaties, one public, the other private between Aymer and John. The count remained a steady ally of the kings of England against the rebellious House of Lusignan.