Used in Middle English as a version of
Cassandra. In Skelton's poem to Mistress
Margaret Hussey, he compares her to 'good
Cassander', quite probably to get a rhyme for 'coliander' and 'pomander'. It looks masculine, like
Alexander rather than
Alexandra, but in context - Good
Cassander, Steadfast of thought - it must refer to the Trojan truth-teller.
I don't like it as a name for anyone, but the reference is fun.